Tag Archives: bearing with rubber

China Best Sales Fiber Rubber Lined Cutless Bearing Motor Shaft Bearing Sleeve Plastic Nylon Bushing Flame Retardant Flat Strain Shaft Sleeve Cutless Bearing with high quality

Product Description

Axis Diameter
Outside Diameter B Bearing Length C Metal Wall Thickness D (Weight)
In mm In mm In mm In mm W
3/4″ 19.05 1-1/4″ 31.75 3″ 76.20 1/8″ 3.18 0.217
7/8″ 22.23 1-1/4″ 31.75 3T/2″ 88.90 3/64″ 1.19 0.123
7/8″ 22.23 1-3/8″ 34.93 3-1/2″ 88.90 1/8″ 3.18 0.298
7/8″ 22.23 1-1/2″ 38.10 3-1/2″ 88.90 1/8″ 3.18 0.324
1″ 25.40 1-1/4″ 31.75 4″ 101,6 3/64″ 1.19 0.127
1″ 25.40 1-3/8″ 34.93 4″ 101.6 3/64″ 1.19 0.156
1″ 25.40 1-1/2″ 38.10 4″ 101.6 1/8″ 3.18 0.356
1″ 25.40 1-5/8° 41.28 4″ 101.6 1/8″ 3.18 0.500
1″ 25.40 2″ 50.80 4″ 101.6 1/8* 3.18 0.566
1-1/8″ 28.58 1-1/2″ 38,10 4-1/2″ 114,3 3/64″ 1.19 0.193
1-1/8″ 28.S8 1-5/8″ 41.28 4-1/2″ 114.3 1/8″ 3.18 0.438
1-1/8″ 28.58 1-3/4″ 44.45 4T/2″ 114.3 1/8″ 3.18 0.496
1-1/8″ 28.58 2″ 50.80 4-1/2″ 114.3 1/8″ 3.18 0.618
1-1/4″ 31.75 1-1/2″ 38.10 5″ 127 3/64″ 1.19 0.192
1-1/4″ 31.75 1-3/4″ 44.45 5″ 127 1/8″ 3.18 0.526
1-1/4″ 31.75 2″ 50.80 5″ 127 1/8″ 3.18 0.664
1-1/4″ 31.75 2-1/8″ 53.98 5″ 127 1/8″ 3.18 0.735
1-3/8° 34.93 1-7/8° 47.63 5 -1/2″ 139.7 1/8″ 3.18 0.626
1-3/8″ 34.93 2″ 50.80 5-1/2″ 139.7 1/8″ 3.18 0.702
1-3/8″ 34.93 2-1/8″ 53.98 5-1/2″ 139.7 1/8″ 3.18 0.781
1-3/8″ 34.93 2-3/8″ 60.33 5-1/2″ 139.7 1/8″ 3.18 0.946
1-1/2″ 38.10 2″ 50.80 6″ 152.4 1/8″ 3.18 0.733
1-1/2° 38.10 2-3/8″ 60.33 6″ 152.4 1/8″ 3.18 1.000
1-1/2″ 38.10 2-W 57.15 6″ 152.4 1/8″ 3.18 0.800
1-5/8″ 41.28 2-1/8″ 53.98 6-1/2″ 165.1 1/8″ 3.18 0.848
1-5/8″ 41.28 2-5/8″ 66.68 6-1/2″ 165.1 1/8″ 3.18 1.251
1-3/4″ 44.45 2-3/8″ 60.33 T 177.8 1/8″ 3.18 1.078
1-3/4° 44.45 2-5/8° 66.68 7n 177.8 1/8″ 3.18 1.23
1-3/4″ 44.45 2-1/4″ 57.15 T 117.8 1/8″ 3.18  
1-3/4″ 44.45 2-1/2″ 63,50 T 177,8 1/8″ 3.18 1.00
1-7/8″ 47.63 2-5/8″ 66.68 7-1/2″ 190.5 1/8″ 3.18 1.342
1-7/8″ 47.63 2-15/16″ 74.61 7T/2″ 190.50 1/8″ 3.18 1.743
2″ 50.80 2-5/8″ 66.68 8″ 203.20 1/8″ 3.18 1.100
2″ 50.80 3″ 76.20 8″ 203.20 1/8H 3.18 1.300
2″ 50.80 2-3/4″ 69.85 8″ 203.20 1/8″ 3.18 1.400
2-1/8″ 53.98 2-15/16″ 74.61 8-1/2″ 215.90 1/8″ 3.18 1.600
2-1/8″ 53.98 3-1/8″ 79.38 8T/2″ 215.90 1/8″ 3.18 1.983
2-1/4° 57.15 2-15/16″ 74.61 9″ 228.60 1/8″ 3.18 1.781
2-1/4″ 57.15 3-1/8″ 79.38 9″ 228.60 1/8″ 3.18 2.571
2-1/4″ 57.15 3-3/8″ 85.73 9″ 228,60 1/8″ 3.18 2.364
2-1/4″ 57.15 3″ 76.20 9″ 228.60 1/8″ 3.18 1.600
2-3/8″ 60.33 3-3/8″ 85.73 9T/2″ 241.30 1/8″ 3.18 2.200
2-1/2° 63.50 3-1/8° 79.38 10″ 254.00 1/8″ 3.18 1.800

Company Profile

HangZhou CZPT BEARING Co., Ltd is specialized in bearings areas since 2013, we create an innovative sales service of bearings to satisfy diffierent kinds of application.

We are located in HangZhou city, ZHangZhoug province, China, near HangZhou and ZheJiang port, which has recognized by special ISO, with CE certificiate, The various bearings we produce there have been inspected and confirmed by SGS to be RoHS compliant.

We Registered “GNYAR” in 2014, registered “MAJC” in 2018, both was received in high-performance praise, and earned high reputation. Our products is widely used to mining machinery, motorcycle parts, agricultural machine, auto parts and embroidery machine spare parts, Power tools, bicycle, Semiconductor Facilities. Fitness Equipments, Toys, fishing, industrial using design, etc.

After years of development, we believe that by establishing a mutually beneficial relationship with our customers we can both continue to grow and prosper, we wish and hope to always grant you satisfaction.




Packaging & Shipping


  /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Customized: Non-Customized
Standard Parts: Yes
Universal: Yes
Type: Bearing Roller
Material: Stainless Steel
Model Number: Brass Flange
US$ 20/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

nylon sleeve bearing

Are there specific considerations for choosing nylon sleeve bearings in applications with high-speed or heavy load requirements?

Yes, there are specific considerations to keep in mind when choosing nylon sleeve bearings for applications with high-speed or heavy load requirements. Here’s a detailed explanation of these considerations:

  • High-Speed Applications:

When selecting nylon sleeve bearings for high-speed applications, several factors need to be considered:

  • Material Selection:

Choose a nylon material with low friction properties to minimize heat generation and reduce the risk of excessive wear at high speeds. Reinforced nylon or specialty formulations designed for high-speed applications are often preferred. These materials offer improved mechanical properties and can handle the demands of high-speed rotation while maintaining their structural integrity.

  • Lubrication:

Ensure that the nylon sleeve bearings are properly lubricated to reduce friction and dissipate heat. Consider self-lubricating nylon bearings that incorporate solid lubricants or additives within the material. These bearings provide continuous lubrication during operation, reducing the need for external lubrication and ensuring smooth performance at high speeds.

  • Cage Design:

Pay attention to the cage design of the nylon sleeve bearings. Opt for a cage design that promotes even distribution of the rolling elements and minimizes vibration and unwanted movement. A well-designed cage enhances stability and reduces the risk of issues caused by high-speed rotation, such as ball skidding or roller skewing.

  • Heavy Load Applications:

When considering nylon sleeve bearings for heavy load applications, the following factors should be taken into account:

  • Load Capacity:

Verify that the nylon sleeve bearings have the necessary load capacity to support the anticipated loads. Nylon bearings are available in different sizes and configurations, each with its own load-carrying capabilities. Consider the expected radial and axial loads and choose bearings that can withstand these forces without excessive deformation or premature failure.

  • Material Strength:

Select a nylon material with high mechanical strength and rigidity to handle heavy loads. Reinforced nylon or specialty formulations with enhanced strength properties are commonly used in heavy load applications. These materials provide the necessary structural integrity and resistance to deformation under significant loads.

  • Lubrication and Wear:

Ensure proper lubrication to reduce friction and wear between the bearing surfaces. Heavy loads can generate higher levels of heat and stress, increasing the risk of wear and premature failure. Consider self-lubricating nylon bearings or implement a lubrication regimen that adequately addresses the demands of the heavy load conditions.

It is important to note that while nylon sleeve bearings can handle high-speed or heavy load applications, there may be practical limits to their performance. In cases of extremely high speeds or exceptionally heavy loads, alternative bearing materials or designs, such as ball or roller bearings, may be more suitable.

In summary, when choosing nylon sleeve bearings for high-speed or heavy load applications, consider factors such as material selection, lubrication, cage design, load capacity, material strength, and wear prevention. By carefully evaluating these considerations, you can ensure that the nylon sleeve bearings meet the specific demands of the application, providing reliable performance and extended service life.

nylon sleeve bearing

What is the impact of proper lubrication and maintenance on the performance and lifespan of nylon sleeve bearings?

Proper lubrication and maintenance have a significant impact on the performance and lifespan of nylon sleeve bearings. Adequate lubrication and regular maintenance help ensure optimal operation, minimize wear, and extend the lifespan of the bearings. Here’s a detailed explanation of the impact of proper lubrication and maintenance on nylon sleeve bearings:

  • Reduction of Friction and Wear:

Proper lubrication creates a thin film or layer of lubricant between the bearing surfaces, reducing friction and minimizing wear. Nylon sleeve bearings rely on this lubricating film to reduce direct contact between the moving parts. Insufficient or inadequate lubrication can lead to increased friction, heat generation, and accelerated wear, potentially causing premature failure of the bearings. Regular lubrication and maintenance ensure that the bearings continue to operate smoothly and efficiently, minimizing friction-related issues and extending their lifespan.

  • Prevention of Dry Running:

Dry running, which refers to the operation of bearings without sufficient lubrication, can be detrimental to the performance and lifespan of nylon sleeve bearings. Without proper lubrication, the bearing surfaces can experience increased friction, heat buildup, and potential damage. Regular lubrication helps prevent dry running, ensuring that the bearings operate with reduced friction, minimal wear, and improved longevity.

  • Protection Against Contamination:

Adequate lubrication acts as a protective barrier, preventing contaminants such as dust, dirt, moisture, and debris from entering the bearing surfaces. Contamination can cause abrasive wear, corrosion, and other forms of damage to the bearings. Proper lubrication and maintenance practices help maintain a clean and controlled operating environment, reducing the risk of contamination and preserving the performance and lifespan of the nylon sleeve bearings.

  • Temperature Regulation:

Lubrication plays a crucial role in temperature regulation within nylon sleeve bearings. During operation, friction generates heat, and proper lubrication helps dissipate this heat, preventing excessive temperature rise. Overheating can lead to thermal damage, degradation of the nylon material, and a decrease in bearing performance. Regular lubrication ensures that the bearings remain within the appropriate temperature range, promoting optimal functioning and prolonging their lifespan.

  • Identification of Issues:

Regular maintenance and lubrication routines provide opportunities to inspect nylon sleeve bearings for signs of wear, damage, misalignment, or other issues. By closely monitoring the condition of the bearings, any potential problems can be detected early on, allowing for timely repairs or replacements. This proactive approach to maintenance can prevent catastrophic failures, minimize downtime, and extend the overall lifespan of the bearings.

In summary, proper lubrication and maintenance have a profound impact on the performance and lifespan of nylon sleeve bearings. They reduce friction and wear, prevent dry running, protect against contamination, regulate temperature, and facilitate the early detection of issues. By following recommended lubrication practices and conducting regular maintenance, users can optimize the operation, minimize wear, and extend the lifespan of their nylon sleeve bearings.

nylon sleeve bearing

Can you explain the advantages of using nylon as a material for sleeve bearings?

Using nylon as a material for sleeve bearings offers several advantages due to its unique properties and characteristics. Here’s a detailed explanation of the advantages of using nylon for sleeve bearings:

  • Low Friction:

Nylon exhibits low friction properties, which makes it an excellent choice for sleeve bearings. The material’s molecular structure provides inherent lubricity, reducing friction between the bearing and the mating surface. This low-friction characteristic helps minimize energy losses, improve efficiency, and reduce wear on the bearing and the mating components. It also contributes to quieter operation, making nylon sleeve bearings suitable for applications where noise reduction is important.

  • Self-Lubricating:

Nylon has self-lubricating properties, which means it can operate with minimal or no additional lubrication. The material’s surface has a natural ability to retain and distribute lubricating agents, reducing the need for continuous external lubrication. This feature simplifies maintenance requirements and lowers operating costs. The self-lubricating nature of nylon also helps prevent dry running, which can lead to increased friction, heat generation, and premature wear.

  • Wear Resistance:

Nylon sleeve bearings offer good wear resistance, allowing them to withstand continuous sliding motion against mating surfaces without significant wear or damage. The material’s durable nature ensures a longer service life and reduces the frequency of bearing replacements. Nylon’s wear resistance is particularly beneficial in applications with high-speed rotation, heavy loads, or abrasive environments, where the bearing is exposed to challenging operating conditions.

  • Corrosion Resistance:

Nylon is highly resistant to corrosion, making it suitable for applications in moist or corrosive environments. Unlike metal bearings, nylon sleeve bearings do not rust or corrode when exposed to water, chemicals, or most common lubricants. This corrosion resistance extends the lifespan of the bearings and reduces the risk of premature failure. Nylon sleeve bearings can be a cost-effective alternative to metal bearings in applications where corrosion is a concern.

  • Chemical Resistance:

Another advantage of nylon as a material for sleeve bearings is its excellent chemical resistance. Nylon can withstand exposure to a wide range of chemicals, solvents, and industrial fluids without significant degradation. This property allows nylon sleeve bearings to be used in environments where exposure to chemicals is common, such as chemical processing plants or laboratories. The chemical resistance of nylon ensures the reliability and longevity of the bearings in these demanding applications.

  • Lightweight:

Nylon is a lightweight material, making it advantageous for applications that require weight reduction or where low inertia is essential. Compared to traditional metal bearings, nylon sleeve bearings contribute to overall weight savings in machinery and equipment. The reduced weight can lead to improved energy efficiency, reduced operating costs, and easier handling during installation and maintenance.

  • Cost-Effectiveness:

Nylon sleeve bearings are often more cost-effective than metal bearings. Nylon is a readily available and cost-efficient material, making the manufacturing of nylon bearings economical. Additionally, the self-lubricating properties of nylon reduce the need for additional lubricants and maintenance, resulting in lower operating costs over time. The extended service life and reduced replacement frequency of nylon sleeve bearings also contribute to cost savings.

In summary, using nylon as a material for sleeve bearings offers several advantages, including low friction, self-lubrication, wear resistance, corrosion resistance, chemical resistance, lightweight construction, and cost-effectiveness. These characteristics make nylon sleeve bearings a popular choice in various applications, providing reliable and efficient operation while minimizing maintenance requirements and overall costs.

China Best Sales Fiber Rubber Lined Cutless Bearing Motor Shaft Bearing Sleeve Plastic Nylon Bushing Flame Retardant Flat Strain Shaft Sleeve Cutless Bearing   with high qualityChina Best Sales Fiber Rubber Lined Cutless Bearing Motor Shaft Bearing Sleeve Plastic Nylon Bushing Flame Retardant Flat Strain Shaft Sleeve Cutless Bearing   with high quality
editor by CX 2024-02-21

China Good quality Miniature Bearing Manufacturer 3*8*4 693-2RS High Precision Mini Bearing with Rubber Seal bearing air

Product Description



ITEM  693-2RS
bore diameter(d) 3mm
outside diameter(D) 8mm
Width(B) 4mm
TYPE zz or rs
MEMO widely used in motor



PART NUMBER SEAL TYPE Bore diameter(d) Outer diameter(D) Width(B) BALL SIZE(mm) BALL QTY weight(g)
681 open 1 3 1 0.6 6 0.03
691 open 1 4 1.6 0.8 5 0.11
681X open 1.5 4 1.2 0.6 7 0.1
681xzz Shield 1.5 4 2 0.6 7 0.14
691X open 1.5 5 2 0.6 6 0.2
691XZZ Shield 1.5 5 2.6 0.6 6 0.25
601X open 1.5 6 2.5 1.2 6 0.31
601XZZ Shield 1.5 6 3 1.2 6 0.4
682 open 2 5 1.5 0.8 6 0.15
682zz Shield 2 5 2.3 0.8 6 0.2
682-2RS Rubber seal 2 5 2.3 0.8 6 0.2
MR52 open 2 5 2 0.8 6 0.14
MR52ZZ Shield 2 5 2.5 0.8 6 0.2
MR52-2RS Rubber seal 2 5 2.5 0.8 6 0.2
692 open 2 6 2.3 1.2 6 0.28
692ZZ Shield 2 6 3 1.2 6 0.35
692-2RS Rubber seal 2 6 3 1.2 6 0.35
MR62 open 2 6 2.5 1.2 6 0.28
MR62ZZ Shield 2 6 2.5 1.2 6 0.33
MR62-2RS Rubber seal 2 6 2.5 1.2 6 0.33
MR72 open 2 7 2.5 1.2 7 0.43
MR72ZZ Shield 2 7 3 1.2 7 0.53
MR72-2RS Rubber seal 2 7 3 1.2 7 0.53
602 open 2 7 2.8 1.2 7 0.5
602ZZ Shield 2 7 3.5 1.2 7 0.6
602-2RS Rubber seal 2 7 3.5 1.2 7 0.6
682X open 2.5 6 1.8 0.8 8 0.2
682XZZ Shield 2.5 6 2.6 0.8 8 0.35
682X-2RS Rubber seal 2.5 6 2.6 0.8 8 0.35
692X open 2.5 7 2.5 1.2 7 0.4
692XZZ Shield 2.5 7 3.5 1.2 7 0.55
692X-2RS Rubber seal 2.5 7 3.5 1.2 7 0.55
MR82X open 2.5 8 2.5 1.588 6 0.52
MR82XZZ Shield 2.5 8 2.5 1.588 6 0.52
MR82X-2RS Rubber seal 2.5 8 2.5 1.588 6 0.52
602X open 2.5 8 2.8 1.588 6 0.61
602XZZ Shield 2.5 8 4 1.588 6 0.85
602X-2RS Rubber seal 2.5 8 4 1.588 6 0.85
MR63 open 3 6 2 0.8 8 0.2
MR63ZZ Shield 3 6 2.5 0.8 8 0.28
MR63-2RS Rubber seal 3 6 2.5 0.8 8 0.28
683 open 3 7 2 1 8 0.32
683ZZ Shield 3 7 3 1 8 0.45
683-2RS Rubber seal 3 7 3 1 8 0.45
MR83 open 3 8 2.5 1.2 7 0.51
MR83ZZ Shield 3 8 3 1.2 7 0.67
MR83-2RS Rubber seal 3 8 3 1.2 7 0.67
693 open 3 8 3 1.2 7 0.6
693ZZ Shield 3 8 4 1.2 7 0.8
693-2RS Rubber seal 3 8 4 1.2 7 0.8
MR93 open 3 9 2.5 1.588 6 0.75
MR93ZZ Shield 3 9 4 1.588 6 1.15
MR93-2RS Rubber seal 3 9 4 1.588 6 1.15
603 open 3 9 3 1.588 6 0.84
603ZZ Shield 3 9 5 1.588 6 1.13
603-2RS Rubber seal 3 9 5 1.588 6 1.13
623 open 3 10 4 1.588 7 1.45
623ZZ Shield 3 10 4 1.588 7 1.65
623-2RS Rubber seal 3 10 4 1.588 7 1.65
633 open 3 13 5 2.381 7 3.27
633ZZ Shield 3 13 5 2.381 7 3.43
633-2RS Rubber seal 3 13 5 2.381 7 3.43
MR74 open 4 7 2 1 8 0.23
MR74ZZ Shield 4 7 2.5 1 8 0.33
MR74-2RS Rubber seal 4 7 2.5 1 8 0.33
MR84 open 4 8 2 1.2 7 0.39
MR84ZZ Shield 4 8 3 1.2 7 0.56
MR84-2RS Rubber seal 4 8 3 1.2 7 0.56
684 open 4 9 2.5 1.588 7 0.65
684ZZ Shield 4 9 4 1.588 7 1
684-2RS Rubber seal 4 9 4 1.588 7 1
MR104 open 4 10 3 1.588 8 0.96
MR104ZZ Shield 4 10 4 1.588 8 1.33
MR104-2RS Rubber seal 4 10 4 1.588 8 1.33
694 open 4 11 4 2 7 1.69
694ZZ Shield 4 11 4 2 7 1.75
694-2RS Rubber seal 4 11 4 2 7 1.75
604 open 4 12 4 2 7 2.19
604ZZ Shield 4 12 4 2 7 2.34
604-2RS Rubber seal 4 12 4 2 7 2.34
624 open 4 13 5 2.381 7 3.1
624ZZ Shield 4 13 5 2.381 7 3.2
624-2RS Rubber seal 4 13 5 2.381 7 3.2
634 open 4 16 5 2.381 7 5.24
634ZZ Shield 4 16 5 2.381 7 5.44
634-2RS Rubber seal 4 16 5 2.381 7 5.44
MR85 open 5 8 2 1 8 0.25
MR85ZZ Shield 5 8 2.5 1 8 0.34
MR85-2RS Rubber seal 5 8 2.5 1 8 0.34
MR95 open 5 9 2.5 1.2 8 0.54
MR95ZZ Shield 5 9 3 1.2 8 0.58
MR95-2RS Rubber seal 5 9 3 1.2 8 0.58
MR105 open 5 10 3 1.2 8 0.58
MR105ZZ Shield 5 10 4 1.2 8 0.62
MR105-2RS Rubber seal 5 10 4 1.2 8 0.62
MR115 open 5 11 4 1.588 8 0.62
MR115ZZ Shield 5 11 4 1.588 8 0.62
MR115-2RS Rubber seal 5 11 4 1.588 8 0.62
685 open 5 11 3 1.588 8 1.16
685ZZ Shield 5 11 5 1.588 8 1.93
685-2RS Rubber seal 5 11 5 1.588 8 1.93
695 open 5 13 4 2 8 2.31
695ZZ Shield 5 13 4 2 8 2.39
695-2RS Rubber seal 5 13 4 2 8 2.39
605 open 5 14 5 2.381 7 3.46
605ZZ Shield 5 14 5 2.381 7 3.75
605-2RS Rubber seal 5 14 5 2.381 7 3.75
625 open 5 16 5 2.778 7 4.95
625ZZ Shield 5 16 5 2.778 7 5.1
625-2RS Rubber seal 5 16 5 2.778 7 5.1
635 open 5 19 6 3.5 6 8.5
635ZZ Shield 5 19 6 3.5 6 8.89
635-2RS Rubber seal 5 19 6 3.5 6 8.89
MR106 open 6 10 2.5 1.2 10 0.55
MR106ZZ Shield 6 10 3 1.2 10 0.7
MR106-2RS Rubber seal 6 10 3 1.2 10 0.7
MR126 open 6 12 3 1.588 8 1.25
MR126ZZ Shield 6 12 4 1.588 8 1.66
MR126-2RS Rubber seal 6 12 4 1.588 8 1.66
686 open 6 13 3.5 2 8 1.87
686ZZ Shield 6 13 5 2 8 2.68
686-2RS Rubber seal 6 13 5 2 8 2.68
696 open 6 15 5 2.381 7 3.65
696ZZ Shield 6 15 5 2.381 7 3.85
696-2RS Rubber seal 6 15 5 2.381 7 3.85
606 open 6 17 6 3.5 6 5.94
606ZZ Shield 6 17 6 3.5 6 6.89
606-2RS Rubber seal 6 17 6 3.5 6 6.89
626 open 6 19 6 3.5 6 8.12
626ZZ Shield 6 19 6 3.5 6 8.65
626-2RS Rubber seal 6 19 6 3.5 6 8.65
636 open 6 22 7 3.969 7 13.9
636ZZ Shield 6 22 7 3.969 7 14.5
636-2RS Rubber seal 6 22 7 3.969 7 14.5
MR117 open 7 11 2.5 1.2 9 0.59
MR117ZZ Shield 7 11 3 1.2 9 0.71
MR117-2RS Rubber seal 7 11 3 1.2 9 0.71
MR137 open 7 13 3 1.2 12 1.52
MR137ZZ Shield 7 13 4 1.2 12 2.01
MR137-2RS Rubber seal 7 13 4 1.2 12 2.01
687 open 7 14 3.5 2 9 2.03
687ZZ Shield 7 14 5 2 9 2.95
687-2RS Rubber seal 7 14 5 2 9 2.95
697 open 7 17 5 2 9 5.01
697ZZ Shield 7 17 5 2 9 5.26
697-2RS Rubber seal 7 17 5 2 9 5.26
607 open 7 19 6 3.5 6 7.8
607ZZ Shield 7 19 6 3.5 6 8.24
607-2RS Rubber seal 7 19 6 3.5 6 8.24
627 open 7 22 7 3.969 7 12.7
627ZZ Shield 7 22 7 3.969 7 13.1
627-2RS Rubber seal 7 22 7 3.969 7 13.1
637 open 7 26 9 4.762 7 24.2
637ZZ Shield 7 26 9 4.762 7 25.8
637-2RS Rubber seal 7 26 9 4.762 7 25.8
MR128 open 8 12 2.5 1.2 12 0.7
MR128ZZ Shield 8 12 3.5 1.2 12 0.99
MR128-2RS Rubber seal 8 12 3.5 1.2 12 0.99
MR148 open 8 14 3.5 1.588 10 1.9
MR148ZZ Shield 8 14 4 1.588 10 2.19
MR148-2RS Rubber seal 8 14 4 1.588 10 2.19
688 open 8 16 4 2 10 3.11
688ZZ Shield 8 16 5 2 10 4.05
688-2RS Rubber seal 8 16 5 2 10 4.05
698 open 8 19 6 3.175 7 7.12
698ZZ Shield 8 19 6 3.175 7 7.57
698-2RS Rubber seal 8 19 6 3.175 7 7.57
608 open 8 22 7 3.969 7 11.8
608ZZ Shield 8 22 7 3.969 7 12.9
608-2RS Rubber seal 8 22 7 3.969 7 12.9
628 open 8 24 8 3.969 7 17.1
628ZZ Shield 8 24 8 3.969 7 18.5
628-2RS Rubber seal 8 24 8 3.969 7 18.5
638 open 8 28 9 4.762 7 28.1
638ZZ Shield 8 28 9 4.762 7 30.3
638-2RS Rubber seal 8 28 9 4.762 7 30.3
679 open 9 14 3 1.588 12 1.35
679ZZ Shield 9 14 4.5 1.588 12 1.98
679-2RS Rubber seal 9 14 4.5 1.588 12 1.98
689 open 9 17 4 2 11 3.41
689ZZ Shield 9 17 5 2 11 4.38
689-2RS Rubber seal 9 17 5 2 11 4.38
699 open 9 20 6 3.175 8 8.38
699ZZ Shield 9 20 7 3.175 8 8.54
699-2RS Rubber seal 9 20 7 3.175 8 8.54
609 open 9 24 7 3.175 8 14.7
609ZZ Shield 9 24 7 3.175 8 16
609-2RS Rubber seal 9 24 7 3.175 8 16
629 open 9 26 8 4.762 7 19
629ZZ Shield 9 26 8 4.762 7 21.8
629-2RS Rubber seal 9 26 8 4.762 7 21.8
639 open 9 30 10 4.762 7 36.2
639ZZ Shield 9 30 10 4.762 7 37.1
639-2RS Rubber seal 9 30 10 4.762 7 37.1






   Established in 2007, HangZhou Runstar Bearings Manufacturing Co.,Ltd is a professional manufacturer of thrust ball bearing and miniature ball bearing in HangZhou,China.  With a inner diameter from 2mm to 15mm for metric series and from 0.0781″ to 0.375″ for inch series , the material can be selected with chrome steel(Gcr15) or stainless steel(9Cr18) at your request, our characteristic products are thrust ball bearing with or without groove, miniature ball bearing,flange bearing and  stainless steel bearing,as well as non-standard bearings, we have more than 12 year’s experience in supplying thrust ball bearing and miniature ball bearing for industries.











Precision Rating: ABEC-1,ABEC-3,ABEC-5
Structure: Deep Groove
Application: Motor,DC Fan,Home Appliance
US$ 2/Set
1 Set(Min.Order)


Order Sample

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.

about shipping cost and estimated delivery time.
Payment Method:


Initial Payment

Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.


The Benefits of Using Self-Lubricating Bushings for Your Next Pivot

Like any other auto part, control arm bushings wear out over time. This results in an increase in irritating vibrations that can be dangerous in severe cases. The bushings in the control arms also wear out due to the stress that extreme driving conditions put on the control arms. Additionally, environmental factors and oversized tires tend to transmit more vibration through the bushing than conventionally sized tires. Whatever the cause, bushings can be the source of many problems.

wear and cracking

The main cause of dry valve side bushing cracking is a mismatch in thermal expansion of the core and flange. This situation can seriously compromise the safety of the power system. To improve the safety of dry valve side bushings, the crack development of epoxy impregnated paper under various conditions was investigated. A coupled thermomechanical simulation model was also used to study the cracking process.
The first step in diagnosing the cause of bushing wear and cracking is a visual inspection. The bushing of the lower control arm is fixed to the frame by a bracket. If there are any visible cracks, it’s time to replace the bushing. However, there is no need to replace the entire suspension. In some cases, worn bushings can cause a variety of problems, including body lean, excessive tire wear and cornering noise.

Maintenance free

If you’re considering maintenance-free bushings for your next pivot, you’ll be wondering what to look for in these components. The bushing protects the housing from corrosion and keeps the bushing under pressure. However, many users are not familiar with what these components can do for their applications. In this article, we’ll look at several examples of truly maintenance-free pivots and discuss their requirements.
One of the most popular types of maintenance-free bushings are flanged and parallel. Unlike worm gear bushings, these self-lubricating metal bearings are ideal for a variety of applications and conditions. They reduce failure and downtime costs while providing the long-term lubrication required by other types of bushings. Since these sleeves are made of lead-free material, they are RoHS compliant, which means they are environmentally friendly.Another common maintenance-free bushing is plastic. This material is easier to find off-the-shelf and relatively inexpensive to produce. However, it is not suitable for high load applications as it will crack under heavy loads and damage mating parts. Plastics can also deviate if the manufacturing process is imprecise. Plastic bushings can also crack when subjected to high loads.


When using a self-lubricating bushing, there is no need to apply grease to the bushing. Oily liquids tend to attract dirt and grit, which can wear away the graphite prematurely. By eliminating the need for regular lubrication, you will reduce equipment maintenance costs. This article will explore the benefits of self-lubricating bushings. You will love your kindness.
Self-lubricating bushings have a strong base material to withstand radial bearing pressure while providing shaft support at the contact surfaces. The material also has good fatigue properties and low friction motion. Self-lubricating bushings can be used in environments with high temperatures and aggressive media. These products can also withstand enormous pressure. When using self-lubricating bushings, it is important to select the correct material.
The main advantage of using self-lubricating bushings is ease of maintenance. They don’t require oil to run and are cheaper to buy. Their main benefit is that they can significantly reduce your machine running costs. These bearings do not require oiling operations, reducing maintenance costs. These bearings also offer a simplified mechanical design due to their thin walls and high load capacity. In addition, they reduce noise levels while maintaining excellent wear resistance. Plus, their materials are ROHS compliant, which means they don’t require oil.
Hydropower installations are another area where self-lubricating bushings have proven their advantages. They reduce maintenance costs, extend equipment life, and improve environmental benefits. For example, the Newfoundland Power Company uses self-lubricating bushings in the gates of its hydroelectric power plants. These self-lubricating bushings eliminate grease from entering waterways and tailraces. As a result, power companies are able to reduce maintenance and costs.

compared to cartilage in the human body

What is the difference between tendon, bone and cartilage? Human cartilage is composed of collagen and elastic fibers. In contrast, fibrocartilage contains more collagen than hyaline cartilage. Both cartilage types are composed of proteoglycans, which have a protein backbone and glycosaminoglycan side chains. These components work together to provide structure and flexibility to the cartilage.
Bone is a combination of living and dead cells embedded in a matrix. The outer hard layer of bone is dense bone, and the inner layer is spongy, containing bone marrow, blood vessels, nerves, etc. Bone contains both organic and inorganic substances, and this process of hardening of the matrix produces bone. On the other hand, cartilage consists of chondrocytes and a matrix composed of collagen and elastin fibers. Compared to bone, cartilage is yellow and contains elastic fibers.
Although bone and cartilage are structurally identical, cartilage is more flexible. It is mainly found in the joints and respiratory system and requires flexibility. Its ingredients include collagen and proteoglycans, which provide compression and abrasion resistance. Furthermore, connective tissue is composed of cells, fibers and matrix.
The basic substance of cartilage is chondroitin sulfate, which is derived from animals. Although cartilage grows more slowly than bone, its microstructure is less organized. There is a fibrous sheath covering the cartilage, called the perichondrium. The molecular composition of the ECM plays an important role in the function of cartilage. The collagen matrix is ​​important for cartilage remodeling and consists of changes in the collagen matrix.

Compared to metal-on-bone contact

Both metal-on-bone contact are known to cause a significant increase in the pressures in a joint. To compare the two, we first calculated the joint contact pressures in each model and compared them. The results of this study support previous research on this subject. The following sections discuss the benefits of both types of contact. They also outline some key differences between the two.

China Good quality Miniature Bearing Manufacturer 3*8*4 693-2RS High Precision Mini Bearing with Rubber Seal   bearing airChina Good quality Miniature Bearing Manufacturer 3*8*4 693-2RS High Precision Mini Bearing with Rubber Seal   bearing air
editor by CX 2023-11-15

China high quality 6200-2RS 10X30X9mm Deep Groove Ball Bearing Double Rubber Seal Bearing Pre-Lubricated with Free Design Custom

Product Description


Solution Description

Our precision deep groove ball bearings are made for higher precision, minimal sounds, tiny vibration, substantial dependability and long lifestyle. They are primarily utilised in a variety of varieties of electric motors. They are also recognized as EMQ (Electric Motor Top quality) bearings.
 EMQ bearings are commonly used in house appliances, toys, electric power instruments, auto motors and other fields. With optimal layout, substantial reliability heat remedy, precision manufacturing procedures and high-quality grease, these products carry out better on reliability, vibration and sound amounts than regular goods creating them more ideal for electric motor apps. These merchandise can also be applied to most gearbox applications as well.

About this item 

  • Dimensions: 10x30x9 mm 
  • Rubber seal on each sides 
  • 100% Chrome Steel for higher resistance and durability 
  • Supports 24,000 rpm 
  • Our substantial-top quality bearing is produced to reduce your replacement frequency and servicing cost

This 6200RS 10x30x9-millimeter sealed ball bearing has deep groove geometry for large speeds and supporting both radial and axial masses. Its chrome steel construction can make it sturdy and resistant to deformity under hefty masses. The rubber seals on equally sides of the bearing keep CZPT in and contaminants out, and it will come pre-lubricated from the maker so that no added lubrication is required. This deep-groove sealed ball bearing is for use in applications that include combined radial and axial masses and a require for high managing accuracy at high rotational speeds. These kinds of purposes consist of clutches, drives, gearboxes, compressors, pumps, turbines, and printing and textile machines, between other individuals.

What’s in the Box

ten 6200RS 10x30x9-millimeter ball bearings

Rolling bearings use rolling factors to keep the separation amongst shifting parts to minimize rotational friction and help radial and axial loads. These components can be 1 of the adhering to kinds: ball, cylindrical, spherical, barrel, needle, spindle, or tapered. All rolling bearings are open, shielded, or sealed. Sealed bearings are lubricated with oil or grease in the bearing manufacturing facility, although open and shielded bearings are meant to be lubricated in spot, with periodic reapplication of lubrication, primarily based on use. The defend guards the working components of the bearing from environmental debris that might be launched and could reduce the ball bearing velocity and lifespan. Rolling bearings are used in a assortment of programs from agricultural CZPT to conveying equipment, robotics, dental tools, elevators, rolling mills, ship rudder shafts, and combination crushers, among others.



Thorough Photographs

Packaging & Shipping

Packaging Details
A.Polybag +Box+Carton 
C.As per customer’s request 
We have kinds of packages, such as plastic baggage, cartons, specific packing containers. We use distinct offers based on the merchandise and our customers’ demands.
Port :ZheJiang
Guide Time:Delivered in thirty times after payment

Business Profile

Our Positive aspects

The use of our deep groove ball bearing:


If you have any other questions, make sure you come to feel cost-free to contact us as follows.


Q: Why CZPT you pick us?

A. We supply the greatest good quality bearings with realistic cost, low friction, minimal sound and prolonged service life.

B. With sufficient inventory and quick supply, you can choose our freight forwarder or your freight forwarder.

C. The best service supplied by a well-trained intercontinental sales group.


Q: Do you take tiny orders?

a hundred% quality verify, as soon as your bearings are normal measurement bearings, even 1, we also settle for.


Q: How long is your shipping and delivery time?

Generally talking, if the goods are in stock, it is 1-3 days. If the merchandise are out of stock, it will just take 6-10 times, based on the amount of the order.


Q: Do you provide samples? Is it free of charge or added?

Of course, we can give a small volume of free of charge samples. Do you brain spending the freight?


Q: What must I do if I don’t see the sort of bearings I need?

We have too numerous bearing collection numbers. Sometimes we are unable to set them all on net. Just deliver us the inquiry and we will be really satisfied to send you the bearing details.


Welcome to make contact with me anytime!

Types of Ball Bearings

There are many types of Ball Bearings obtainable on the market, but which one particular is best for your software? Right here, we will discuss the distinctions between Angular make contact with, One-row, Substantial-carbon steel, and Ceramic ball bearings. These kinds of bearings also attribute races, or a groove in the centre of every. These races are critical in keeping the balls contained inside the cylinder. They also offer a groove-baed pathway.


The ceramic ball employed in ball bearings has a lot of positive aspects. It is lightweight, operates at lower temperatures, has diminished skidding, and is resistant to electrolysis. The ball also exhibits for a longer time exhaustion existence. All of these elements make the ceramic ball a good option for many programs. But, how do you know if a ceramic ball bearing is proper for your application? Go through on to discover why ceramic ball bearings are a greater choice than metal or stainless metal ones.
The ceramic balls are forty% much more dense than metal. This implies less centrifugal force is created on the bearing, which suppresses heat era. Simply because of this reduced friction, ceramic bearings are more successful at transferring strength. In contrast to metal bearings, ceramic balls have lengthier lifestyle spans. Nonetheless, these ceramic balls are not as robust as metal. Consequently, it is essential to comprehend the constraints of the ceramic ball bearing before purchasing 1.
The ceramic components utilized for ball bearings are resistant to micro-welding. Metals endure this procedure when imperfections in the surfaces interact. Ultimately, this results in a brittle ball that minimizes the lifestyle of a bearing. Unlike metals, ceramic materials have a secure actions at substantial temperatures and exhibit much less thermal expansion. This signifies that they can be employed for applications in which lubrication just isn’t an selection.
Even though metal balls can effortlessly absorb contaminants and overseas particles, the ceramic ball is insensitive to this, and will not call for lubrication. This signifies they are not inclined to corrosion and other common difficulties. These are just a couple of reasons why ceramics are a greater option. This technologies has a wide range of makes use of. It really is straightforward to see why it is so well-liked. If you’re looking for a new bearing for your application, be positive to get in touch with an AST Purposes Engineer. They can assess your functioning circumstances and potential failure modes.

Angular get in touch with

An Angular Contact Ball Bearing (also acknowledged as an angular-contact bearing) has an axial element that is generated when radial hundreds are applied. They are usually utilized in pairs, triplex sets, or quadruplex sets. These bearings are also accessible with Super Finished Raceways to minimize sounds and improve lubricant distribution. Angular speak to ball bearings have different design and style units, this kind of as bore size, outer diameter, and outer ring width.
A one-row angular get in touch with bearing has a radial contact angle that is equivalent to the angular distance between the two rings. Double-row angular bearings are made for two-way thrust functionality. These types of bearings can be acquired at Grainger and other online retailers. A typical angular contact bearing will previous up to a million revolutions. They are usually utilized in industrial angular get in touch with bearings.
Single-row angular speak to ball bearings function a established get in touch with angle. These bearings can support radial and axial masses, but they are unable to stand up to large speeds. Solitary-row angular speak to ball bearings may also have a single or two shoulders relieved. Thrust load is a stress put on the bearing when it is mounted in an assembly, and it is utilized to develop an angle amongst the races.
Angular speak to ball bearings occur in one and double-row configurations. They vary in the axial load they can have and the type of lubrication they use. Angular speak to ball bearings are excellent for higher-velocity applications and can accommodate equally radial and axial masses. The type of speak to and lubrication utilised in angular-make contact with ball bearings is dependent on the intended use for the bearing.

Higher-carbon metal

Carbon steel is a lower-alloy and higher-carbon steel employed in bearings. This materials supplies superior power and tiredness homes for ball and roller bearings. Its mechanical qualities are ideal for applications the place the temperature is significantly less than four hundred levels Fahrenheit. High-carbon steel is also used to make bearing elements for chrome metal bearings. These kinds of steels are softer than chrome steel but provide superior sturdiness in applications the place the substance is exposed to significant problems.
Hardened carbon steel balls with an AISI 1015 hardness index are utilized in a selection of automotive, professional, and semi-precision purposes. In addition to automotive programs, they are also used in slides, trolleys, and conveyors. AISI 1015 carbon steel balls are utilised in bearings. They can be bought in a variety of weights and diameters. Carbon steel balls can also be bought in nickel-plated or uncoated varieties for attractive purposes.
In get to decide whether a ball bearing is manufactured of high-carbon metal, the materials have to be examined for its hardness. An ordinary pocket magnet will work properly, but an common rare earth magnet just isn’t powerful enough to measure the hardness. If it draws in the magnet strongly, the steel is metal, while a weak magnet suggests a non-ferrous substance. A hardness take a look at calls for a particular microhardness test.
A reduced-carbon steel is an additional option. Some miniature bearing manufacturers use a substance with considerably less carbon than AISI 440C. This substance is also identified as KS440 or X65Cr13. After becoming heat-taken care of, it develops more compact carbides, ensuing in excellent low-sound characteristics and the same corrosion-resistance as 440C. These components are a considerably less pricey substitute than chrome steel, but they are often less durable than chrome alloy steel.


Solitary-row angular get in touch with ball bearings accommodate axial masses in 1 route. These are normally adjusted against a next bearing. Unlike other ball bearings, they are non-separable and include an upper and lower shoulder. One-row ball bearings are produced of Chromium Metal (GCr15) which is heat-treated to attain large uniform hardness and exceptional wear resistance. They are the most generally used sort of bearings in the planet.
Due to the fact of the angular get in touch with among the radial plane and the raceway, one-row ball bearings transmit radial forces from raceway to raceway. A increased a, the higher the axial load carrying capability of the bearing. Single-row angular contact ball bearings are best for substantial axial loads. Nevertheless, they have limited preload abilities and have to be put in in pairs. Consequently, they are very best utilised for purposes in which axial forces should be distributed.
Solitary-row ball bearings can be pre-lubricated and have steel shields. They are also offered with rubber seals or snap rings on the outside the house edge. They are obtainable with a variety of retainers, like pressed steel cages, plastic shields, and rubber seals. A tapered bore is also accessible upon ask for. They are best for apps exactly where room is limited. The 6200 sequence of bearings are specially effectively suited for electrical motors, dental hand tools, and optical encoders.
Solitary-row angular speak to ball bearings are widely employed for axial masses. The outer and inner rings have marginally more substantial radii than the balls. These bearings can accommodate large speeds and lower torque. They can also be equipped with diverse grease stages. If grease is needed, you can pick a lubricant that has different characteristics depending on the application. They are effortless to install and preserve. However, they are not advisable for adjacent mounting.


A plastic ball bearing is a extremely functional part that can be mounted in a variety of elements, including wheels, pulleys and housings. The outer ring of a plastic bearing is generally the pulley profile. The interior ring can be manufactured of a shaft or polymer. The built-in design of a plastic ball bearing helps to lessen assembly time and expense. Listed here are some of the benefits of this variety of bearing:
First and foremost, plastic balls are lighter than metallic balls. They also have significantly less magnetic homes than metal balls, generating them the very best option for applications requiring minimal excess weight and sounds. Glass balls are also lighter than stainless metal balls, producing them the ideal metal-free of charge choice. They are also extremely corrosion-resistant, which helps make them a fantastic option for some purposes. In addition to getting light-weight, polymer ball bearings are also peaceful. And since of their lower fat, plastic ball bearings are best for programs that need quick pace.
One more gain of plastic bearings is their potential to withstand substantial temperatures. This materials is also abrasion and corrosion-resistant. It meets Fda and USDA acceptance requirements. Apart from its abrasion-resistant and corrosion-resistant houses, these plastics do not transfer warmth. Aside from currently being very sturdy and flexible, most plastics are also self-lubricating. Frequent plastics incorporate phenolics, acetals, nylon, and ultra higher molecular weight polyethylene. However, plastics have limits, and these materials may be damaged by severe temperatures or cold circulation beneath hefty hundreds.
Other advantages of plastic ball bearings include their low density, large hardness and low friction coefficient, and potential to endure heat and corrosion. Ceramics are also light-weight, non-conductive, and have outstanding resistance to friction. These goods can endure temperatures up to 1,800 degrees Fahrenheit. If you might be in the market place for a plastic ball bearing, it truly is critical to pick the appropriate variety of content. And if you are searching for a higher-top quality bearing, look no additional.

China high quality 6200-2RS 10X30X9mm Deep Groove Ball Bearing Double Rubber Seal Bearing Pre-Lubricated     with Free Design CustomChina high quality 6200-2RS 10X30X9mm Deep Groove Ball Bearing Double Rubber Seal Bearing Pre-Lubricated     with Free Design Custom

China high quality High Speed Double Rubber Seal Deep Groove Ball Bearing Ball Bearing 6201-2RS with Dimension 12X32X10 mm with Good quality

Merchandise Description


Item Description

About this item 

  • 6201-2RS Ball Bearing: This is the most common products because of to its overall flexibility in apps. It is fantastic for apps that call for substantial speeds, small servicing and minimal functioning sounds. 
  • 6201 Deep Groove Metric Ball Bearings: is composed of an inner ring, outer ring, cage and the ball bearings, the bearings have deep raceway grooves. can deliver high overall performance and higher load capability. 
  • Ball bearing benefit: Ball bearings is manufactured of chrome steel highlighted spin at large speeds require lubrication and a clean environment By obtaining the ball bearings shielded make certain greater security in opposition to dust and grease with a for a longer time lifespan. 
  • 6201-2RS bearing is utilised in a selection of purposes from agricultural CZPT to conveying products, electric powered motors, CNC equipment, vans, mining gear, teach, robotics, dental gear, elevators, rolling mills, ship rudder shafts, and family appliances. 
  • Our Service: 100% satification, To make positive our sincere buyers have the ideal acquiring encounter, we provide thirty-day return/ alternative provider.If you are not content with the product, you should speak to us, we will refund you unconditionally.
  • Broad Software:Rolling bearings are used in a assortment of programs from agricultural CZPT to conveying gear, robotics,dental gear, elevators, ship rudder shafts, skateboards, inline skates, scooters and , amid other individuals. 
  • 6201-2RS Dimension:Internal Dia.=.47 inch, Outer Dia.=1.26 inch, Thickness=.39 inch 
  • Substance:The bearing is created of higher high quality bearing steel, excellent durability and resistance to large loads(Synthetic Grease Method provided Wear-Resistant Additives and Substantial Temperature Grease can be rated to 410 F) 
  • Features:Pre-lubricated, normal accuracy, less friction, higher speed, smooth and low noise 
  • Strictly Shielded:Shields on both sides of the bearing help to keep dust out.Quality Support & 12 Months Warranty


  • 6201-2RS (I.D.=12mm, O.D.=32mm, Thickness=10mm)
  • The bearing is created of high high quality chrome metal (not carbon metal) for sturdiness and resistance to deformity below heavy hundreds.
  • Device polished interior & outer race for the ultimate in sleek higher speed rolling
  • Deep Groove Ball Bearings are 1 of the most broadly utilized rolling bearings. They are utilised to accommodate radial and axial masses in the two instructions.
  • Ideal for CZPT load employs: skateboards, Inline skates, scooters, inline blade electrical motors, wheels of bicycle, motorcycle, electric CZPT energy instrument ect. in numerous other rolling purposes

Model: 6201RS 
Sealed Variety: Double Sealed 
Content: Bearing Steel 
Heat Treatment method: Quenching 

Thick:10mm/ .4″ 
Internal Dia:12mm/ .47″ 
Outer Dia:32mm / 1.26″ 

Bundle Content 
5pcs x 6201RS Ball Bearing 

Our Assure
Refund is assured if the item you gained has any issue. ” 

Welcome to Contact Us
Your satisfation is our first precedence. We aims to provide our clients a content shopping encounter and accomplished After Sale Service. If you have any query to item, please come to feel free to contact us.



In depth Images

Packaging & Transport

Packaging Information
A.Polybag +Box+Carton 
C.As for each customer’s request 
We have varieties of packages, this sort of as plastic bags, cartons, unique boxes. We use different offers based on the items and our customers’ needs.
Port :ZheJiang
Direct Time:Shipped in 30 times soon after payment

Company Profile

Our Benefits

The use of our deep groove ball bearing:


If you have any other concerns, you should truly feel free to get in touch with us as follows.


Q: Why CZPT you decide on us?

A. We give the greatest good quality bearings with affordable price, lower friction, lower sound and long provider life.

B. With enough stock and fast shipping, you can choose our freight forwarder or your freight forwarder.

C. The best services presented by a well-skilled international income staff.


Q: Do you accept little orders?

a hundred% high quality verify, after your bearings are standard measurement bearings, even one, we also acknowledge.


Q: How prolonged is your supply time?

Generally talking, if the products are in inventory, it is 1-3 times. If the goods are out of stock, it will take 6-10 days, relying on the quantity of the get.


Q: Do you provide samples? Is it free of charge or extra?

Of course, we can provide a small amount of free of charge samples. Do you thoughts having to pay the freight?


Q: What need to I do if I don’t see the type of bearings I need?

We have also numerous bearing sequence figures. Often we are unable to place them all on world wide web. Just deliver us the inquiry and we will be extremely satisfied to ship you the bearing details.


Welcome to get in touch with me whenever!

Benefits of Ball Bearings

What is a ball bearing? A ball bearing is a sort of rolling-component bearing that makes use of balls to preserve separation in between two bearing races. Its make contact with angle between the balls and the races will help it lessen friction among the masses. There are many positive aspects to ball bearings, including their capacity to endure drinking water. Read through on to learn far more. Here are a number of of the benefits. You can use them in your daily daily life, from your vehicle to your boat.

Ball bearings reduce friction between loads

Ball bearings lessen friction in between loads by constraining the relative motion between transferring components. These bearings consist of a ring of little steel balls that reduce friction between transferring objects. The name “ball bearing” is derived from the verb “to bear.” The lubricant in the bearing minimizes friction amongst relocating particles. In a equipment, ball bearings reduce friction in between transferring areas and increase linear movement all around a fastened axis.
These bearings are typically used to lessen friction in between masses in rotating devices. They have two tracks, one set to the rotating component and one particular stationary. The rolling balls of a ball bearing have decrease friction than flat surfaces. Since of this, they are helpful for bar stool bearings. They decrease friction in between surfaces and preserve the separation amongst bearing races. Consequently, small floor make contact with is achievable. Ball bearings have the possible to enhance the daily life of devices and lessen strength intake.
Ball bearings can be as small as a wrist look at or as large as an industrial motor. They function the same way, decreasing friction among masses. Between their several employs, ball bearings are crucial for every day functions. Clocks, air conditioners, supporters, and auto axles all use ball bearings. In fact, anything that makes use of a motor needs ball bearings. It’s no question they are gaining reputation in industries and each day existence.

They assistance radial and axial masses

Radial ball bearings are used largely for radial loads, but they also have a ability for axial load. This load capacity is generally given as a proportion of the radial load rating. Axial load capability is typically increased for a bearing with a bigger big difference between the internal and outer ring diameters. The axial load potential is also affected by the bearing’s raceway depth, with shallow raceways being far more suitable for heavier axial masses.
The two main sorts of axial and radial loads are described by their orientation. Axial hundreds implement forces in one course while radial masses act on the reverse path. In both cases, the bearing must help the forces that are imposed. Axial loads apply forces to a bearing in a single route, even though radial hundreds use forces in the two directions. No matter of the type of load, axial and radial loads ought to be deemed when picking a bearing for a given application.
Angular and radial ball bearings differ in their resources. Radial ball bearings are made mostly of via-hardened resources. They normally have a Rockwell hardness rating of fifty eight Rc. The raceways and balls of these bearings are manufactured of 440C stainless metal. They could also have shields and seals. SAE 52100 steel is the most typical material for the raceway, even though molybdenum steels are superb for high temperatures.

They have a speak to angle in between the balls and the races

When evaluating axial load bearings with their radial counterparts, the angular speak to angle is a lot more essential. Axial load bearings, have a make contact with angle among the balls and the races of 35 levels. They are appropriate for axial loads and a minimal radial load. The speak to angle of these bearings is a result of the condition of the interior and outer rings. Every single rolling component will come into make contact with with the inner and outer rings only at a single point, forming a 30 degree angle with the radial plane. The radial drive of the axial load on these bearings is therefore increased by increasing the speak to angle between the balls and the races.
This make contact with angle determines the sum of friction in between the balls and the races, and enables angular speak to bearings to withstand large radial and thrust masses. In addition, the bigger the make contact with angle, the better the axial load support. Angular contact bearings occur in standard imperial (inch) and metric (mm) sizes. The angular speak to angle is identified by the cost-free radial perform worth and the curvature of the interior observe.

They are h2o-resistant

In addition to their water-resistant qualities, corrosion-resistant ball bearings can also safeguard in opposition to the harmful results of corrosive environments. Usually, regular metals, this sort of as metal, are prone to rust, which can substantially minimize their efficiency and lengthen the life of parts. Even so, plastics, stainless steel, and ceramics can give corrosion-resistant ball bearings. And because these supplies are a lot far more tough, they offer you other positive aspects, this sort of as being simple to maintain.
Among the advantages of plastic ball bearings is their high resistance to severe temperatures, substantial speeds, and corrosion. Depending on their construction, plastic bearings are frequently capable to resist corrosion and anti-static qualities. They are light-weight and economical when compared to steel ball bearings. CZPT Income Company was established in 1987 with a modest turnover of four lacs. As of the last economic 12 months, it has developed to 500 lacs in income.
Other benefits of h2o-resistant ball bearings incorporate corrosion resistance, which is a key thought in a lot of apps. While stainless steel is extremely corrosion-resistant, it decreases the bearing’s load-carrying potential. Also, corrosion-resistant deep groove ball bearings are generally produced with a specified interior clearance, which absorbs reduction in clearance during mounting and shaft growth. This issue impacts their functionality, and if these are compromised, a alternative could be required.

They are tough

A few issues make ball bearings tough: they’re made of true resources, which indicates that they have inherent imperfections. Grade-1 balls are created especially for higher-stress apps, these kinds of as Formulation One engines. Grade-3 balls, on the other hand, strike the perfect balance between performance and price. Ceramic balls, for case in point, are created to spin at a higher price of 400 RPM, and they are finished with a mirror end.
A metal carbon ball bearing is one of the toughest types of ball bearings available. The materials is incredibly robust, but the make contact with amongst the balls isn’t really the greatest. Minimal-carbon steel is ideal for linear shafting and is usually coated with a polymer to avert damage. Steel ball bearings with average quantities of carbon are hard, tough, and h2o-resistant. They’re best for gears, but their substantial-carbon metal counterparts are especially challenging and can resist corrosion.
A ceramic ball bearing is yet another choice. This kind has metal inner and outer rings but ceramic balls. Ceramic balls can stand up to increased temperatures than steel and are also electrically insulating. Ceramic ball bearings also tend to be lighter and are much more resistant to wear and tear. They’re also perfect for purposes in which grease is not an alternative, such as in room shuttles. Despite the simple fact that ceramic ball bearings are difficult, they’re even now less costly than metal ball bearings.

They are conductive

You may have heard the expression “ball bearing” if you have researched introductory physics. What does that indicate? Essentially, ball bearings are conductive simply because of their ability to perform electricity. This ability is mirrored in the charge distribution on the surface area of the ball. Optimistic charges are drawn towards the optimistic plate, whilst adverse expenses are drawn absent from the positively charged ball bearing. You may have even noticed a ball bearing in motion.
Nonetheless, in spite of their conductive mother nature, ball bearings can even now turn out to be damaged by electrical discharge. A higher voltage can result in the balls to pit, and the raceways to become uneven. These uneven surfaces will initial display up as abnormal sound, and at some point lead to the bearing to malfunction. Thankfully, engineers have discovered a way to counter this problem: conductive grease. This grease allows present to circulation through the ball bearing, preventing the two warmth and voltage buildup.
The big difference in between steel and ceramic ball bearings is their density. Metal bearings are much more conductive than glass or hybrid ceramics. Steel ball bearings have an even grain framework and are conductive for resonance stream. When transferring rapidly, the air encompassing the steel ball bearing carries resonance from the inner ring to the outer. This can make them perfect for substantial-speed resonance transfer. In addition to currently being conductive, glass microbeads are harder and lighter than metal.

They are utilised in pulley programs

Pulley programs use ball bearings to go the sprocket, which is a wheel that rotates. These bearings are put in on the center mounting gap of the pulley wheel. They protect the complete method from warmth, whilst allowing greater pace and easy operation. They distribute the bodyweight of the load evenly, reducing friction and wobbling, and guarantee a smooth rotation. Ball bearings are typically produced from metal and are installed inside of the pulley wheel.
The minute of inertia and bearing friction are measured to in 10 % accuracy. These two variables affect the pace of the pulley program, which can guide to crashes if the bodyweight holders are not well balanced. Consequently, ball bearings are utilised to decrease the possibility of this sort of crashes. When you want to know much more about ball bearings in pulley programs, here are the rewards they provide.
One more benefit of ball bearings in pulley methods is that they have decrease friction than their reliable counterparts. In get to decrease friction, nonetheless, ball bearings should be manufactured of very good resources. Some of the common ball resources are higher-high quality plastics and stainless metal. Very good materials and clever block design and style are crucial to minimizing friction. If you are planning to use ball bearings in your pulley technique, check out out the adhering to guidelines and make sure you are deciding on the appropriate a single for your software.
China high quality High Speed Double Rubber Seal Deep Groove Ball Bearing Ball Bearing 6201-2RS with Dimension 12X32X10 mm     with Good qualityChina high quality High Speed Double Rubber Seal Deep Groove Ball Bearing Ball Bearing 6201-2RS with Dimension 12X32X10 mm     with Good quality

China Good quality 1/2″ X1 5/16″ X3/8″ Inch Rls4-2RS Rubber Seals Radial Deep Groove Ball Bearing for Motor Pump Dryer Roller Packaging Chemical Instrument Industry with Hot selling

Solution Description

Manufacturing facility

Manufacturing Workshop





How to Change a Bearing

If you want to decide on a bearing for a specific application, you must know a couple of basics. This report will give you an overview of ball, angular make contact with, and sliding-contact bearings. You can decide on a bearing in accordance to the software based mostly on the characteristics of its content and preload. If you are not confident how to pick a bearing, consider experimenting with it. The up coming stage is to recognize the Z-axis, which is the axes alongside which the bearing moves.

Z axis

When it will come to replacing your Z axis bearing, there are a number of issues you have to know. First, you want to make confident that the bearings are seated properly. Then, you should check out the rigidity and rotation of every a single. To guarantee that the two bearings are similarly tensioned, you should flex the Core to the wanted angle. This will preserve the Z axis perpendicular to the perform surface. To do this, initial take away the Z axis bearing from its housing and insert it into the Z axis motor plate. Next, insert the flanged bearing into the Z axis motor plate and safe it with two M5x8mm button head cap screws.
Make positive that the bearing plate and the Z Coupler component are flush and have equal spacing. The spacing in between the two areas is crucial, as also considerably spacing will trigger the leadscrew to become tight. The screws should be quite unfastened, with the exception of the ones that engage the nylocks. Right after putting in the bearing, the up coming action is to commence the Z axis. After this is accomplished, you are going to be able to shift it close to with a stepper.

Angular get in touch with

Ball bearings are manufactured with angular contacts that end result in an angle among the bearing’s races. Although the axial load moves in one particular direction by way of the bearing, the radial load follows a curved route, tending to separate the races axially. In order to reduce this frictional result, angular make contact with bearings are developed with the exact same make contact with angle on the interior and outer races. The get in touch with angle must be picked to match the relative proportions of the axial and radial loads. Typically, a larger contact angle supports a increased axial load, although decreasing radial load.
Ball bearings are the most typical kind of angular speak to bearings. Angular get in touch with ball bearings are employed in many purposes, but their major purpose is in the spindle of a device tool. These bearings are ideal for large-pace, precision rotation. Their radial load ability is proportional to the angular contact angle, so more substantial make contact with angles have a tendency to enlarge with speed. Angular contact ball bearings are offered in one and double-row configurations.
Angular get in touch with ball bearings are a wonderful selection for programs that involve axial masses and intricate shapes. These bearings have raceways on the internal and outer rings and mutual displacement alongside the axial axis. Their axial load bearing ability boosts as the speak to Angle a rises. Angular get in touch with ball bearings can stand up to masses up to five times their preliminary excess weight! For individuals who are new to bearings, there are several resources on-line focused to the subject matter.
Regardless of their complexity, angular speak to ball bearings are very flexible and can be employed in a extensive range of applications. Their angular make contact with enables them to endure moderate radial and thrust loads. Unlike some other bearings, angular get in touch with ball bearings can be positioned in tandem to minimize friction. They also attribute a preload system that removes extra enjoy whilst the bearing is in use.
Angular get in touch with ball bearings are created with different lubricants and cage supplies. Normal cages for angular speak to ball bearings correspond to Desk 1. Some are machined artificial resins while other individuals are molded polyamide. These cage materials are utilised to further improve the bearing’s axial load ability. More, angular contact ball bearings can stand up to high speeds and radial hundreds. When compared to radial speak to ball bearings, angular speak to ball bearings offer the greatest versatility.

Ball bearings

Ball bearings are round buildings with two individual rings. The scaled-down ring is mounted on a shaft. The interior ring has a groove on the outer diameter that acts as a route for the balls. Each the internal and outer ring surfaces are concluded with quite large precision and tolerance. The outer ring is the circular composition with the rolling factors. These aspects can take several varieties. The inner and outer races are generally manufactured of metal or ceramic.
Silicon nitride ceramic balls have very good corrosion resistance and lightweight, but are much more high-priced than aluminum oxide balls. They also show an insulating result and are self-lubricating. Silicon nitride is also appropriate for substantial-temperature environments. However, this sort of substance has the downside of wearing out rapidly and is prone to cracking and shattering, as is the case with bearing metal and glass. It truly is also significantly less resistant to heat than aluminum oxide, so it truly is greatest to acquire aluminum nitride or ceramic ball bearings for purposes that are subjected to extremely higher temperatures.
An additional kind of ball bearings is the thrust bearing. It has a specific layout that accommodates forces in each axial and radial directions. It is also called a bidirectional bearing since its races are side-by-side. Axial ball bearings use a facet-by-side layout, and axial balls are used when the masses are transmitted through the wheel. However, they have poor axial assist and are inclined to separating in the course of large radial loads.
The standard thought driving ball bearings is to minimize friction. By minimizing friction, you may be ready to transfer much more vitality, have much less erosion, and improve the life of your equipment. With present-day advances in technological innovation, ball bearings can complete much better than ever prior to. From iron to steel to plastics, the components utilised in bearings have improved dramatically. Bearings may possibly also incorporate an electromagnetic area. So, it truly is best to pick the appropriate one for your device.
The existence expectancy of ball bearings is dependent on a lot of factors, which includes the operating speed, lubrication, and temperature. A one million-rpm ball bearing can handle in between one and 5 million rotations. As long as its surface speak to location is as tiny as achievable, it really is most likely to be serviceable for at minimum a single million rotations. Nonetheless, the common lifespan of ball bearings relies upon on the application and running situations. The good news is, most bearings can manage a million or far more rotations prior to they start displaying indications of fatigue.

Sliding-contact bearings

The standard theory driving sliding-contact bearings is that two surfaces go in get in touch with with one particular an additional. This sort of bearing functions very best in scenarios where the surfaces are created of dissimilar components. For occasion, a metal shaft shouldn’t run in a bronze-lined bore, or vice versa. Alternatively, one particular factor need to be harder than the other, because use would concentrate in that spot. In addition, abrasive particles tend to power themselves into the softer surface, leading to a groove to wear in that component.
Sliding-speak to bearings have minimal coefficients of friction and are typically used in lower-pace applications. Unlike ball and roller bearings, sliding get in touch with bearings have to be lubricated on both sides of the getting in contact with surfaces to minimize use and tear. Sliding-make contact with bearings generally are made of ceramics, brass, and polymers. Due to the fact of their decrease friction, they are much less accurate than rolling-aspect bearings.
Sliding-contact bearings are also known as basic or sleeve bearings. They have a sliding movement between their two surfaces, which is diminished by lubrication. This kind of bearing is usually utilised in rotary purposes and as manual mechanisms. In addition to offering sliding motion, sliding-make contact with bearings are self-lubricating and have substantial load-carrying capacities. They are typically offered in two diverse types: basic bearings and thrust bearings.
Sliding-speak to linear bearing systems consist of a moving construction (known as the carriage or slide) and the surfaces on which the two aspects slide. The surfaces on which the bearing and journal shift are called rails, ways, or guides. A bore gap is a sophisticated geometry, and a minimal oil film thickness h0 is generally employed at the line of centers. It is achievable to have a sliding-contact bearing in a pillow block.
Since these bearings are porous, they can absorb fifteen to thirty% of the lubrication oil. This substance is typically employed in vehicle and device equipment. Numerous non-metallic supplies are utilized as bearings. One particular illustration is rubber, which gives exceptional shock absorbency and embeddability. Even though rubber has bad toughness and thermal conductivity, it is typically utilized in deep-nicely pumps and centrifugal pumps. This materials has large effect energy, but is not as rigid as steel.

China Good quality 1/2China Good quality 1/2