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
MATERIAL Gcr15
GREASE  
MEMO widely used in motor

 

PRODUCTS CATALOGUE

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

 

 

 

 OUR FACTORY 

 

   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.

 

OUR WORKSHOP

 APPLICATIONS

 

 

 PACKAGING

 

 

 WAY OF DELIVERY

 

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

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

bushing

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.
bushing

self-lubricating

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.
bushing

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