Tag Archives: wall ball bearings

China wholesaler SA090aro Chrome Steel Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings bearing assembly

Product Description

KAA  opening  type  4.762mm(CP0/XP0/AR0

KAA571,KAA015,KAA017

KA  opening  type 6.35mm(CP0/XP0/AR0

KA571,KA571,KA030,KA035,KA040,KA042,

KA045,KA050,KA055,KA060,KA065,KA070,

KA075,KA080,KA090,KA100,KA110,KA120,

KA140,KA180,KA200

KB  opening  type 7.938mm(CP0/XP0/AR0

KB571,KB571,KB030,KB035,KB040,KB042,

KB045,KB050,KB055,KB060,KB065,KB070,

KB075,KB080,KB090,KB100,KB110,KB120,

KB140,KB180,KB200

KC opening  9.525mm(CP0/XP0/AR0

KC040,KC042,KC045,KC050,KC055,KC060,

KC065,KC070,KC075,KC080,KC090,KC100,

KC110,KC120,KC140,KC180,KC200

KD   opening   type 12.7mm(CP0/XP0/AR0

KD040,KD042,KD045,KD050,KD055,KD060,

KD065,KD070,KD075,KD080,KD090,KD100,

KD110,KD120,KD140,KD180,KD200

KF  opening  type  19.05mm(CP0/XP0/AR0

KF040,KF042,KF045,KF050,KF055,KF060,

KF065,KF070,KF075,KF080,KF090,KF100,

KF110,KF120,KF140,KF180,KF200

KG  open  25.4mm(CP0/XP0/AR0

KG040,KG042,KG045,KG050,KG055,

KG060,KG065,KG070,KG075,KG080,

KG090,KG100,KG110,KG120,KG140,

KG180,KG200,KG250,KG300,KG400

JA   seals 6.35mm(CP0/XP0/A

JHA571,JHA015,JA571,JA571,JA030,JA035,

JA040,JA042,JA045,JA050,JA055,JA060,JA065

JB  seals 7.938mm(CP0/XP0/AR

JB571,JB571,JB030,JB035,JB040,JB042,

JB045,JB050,JB055,JB060,JB065

JU  seals 12.7mm(CP0/XP0/AR

JU040,JU042,JU045,JU050,JU055,JU060,

JU065,JU070,JU075,JU080,JU090,JU100,

JU110,JU120

JG   seals  25.4mm(CP0/XP0/AR0

JG120,JG140,JG160,JG180

5mm-360mm   is  8mm,13mm,20mm

 thick 8mm    (CP0/XP0/

K57108,K05008,K06008,K07008,K08008,K09008,K10008,K11008,

K12008,K13008,K14008,K15008,K16008,K17008,K1K20008,K25008,K30008,K32008,K34008,K36  thick 13mm  open (CP0/XP0/

K57113,K05013,K06013,K 0571 3,K08013,K 0571 3,K10013,K11013,

K12013,K13013,K14013,K15013,K16013,K17013,K18013,K19013,

K20013,K25013,K30013,K32013,K34013,K36013

T20mm(CP0/XP0/

K571hinck  20,K 0571 1,K06571,K5711,K 0571 1,K09571,K1571,K11571,

K12571,K13571,K14571,K15571,K16571,K17571,K18571,K19571,

K2571,K25571,K3571,K32571,K34571,K36571

 thick 8mm   Seals (CP0/XP0/ARO

J57108,J05008,J06008,J07008,J08008,J09008,J10008,J11008,

J12008,J13008,J14008,J15008,J16008,J1700

/* 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

Precision: P0.P6.P5
Cage Material: Brass.Nylon Plastic Full Ball
Outer Ring: Chrome Steel
Inner Ring: Gcr15
Weight: 0.172kg
Structure: Xpo Aro Cpo

nylon sleeve bearing

Can you describe the various types of seals and shields used with nylon sleeve bearings for contamination prevention?

Yes, various types of seals and shields are used with nylon sleeve bearings to prevent contamination. Here’s a detailed description of these types:

  • Felt Seals:

Felt seals are commonly used with nylon sleeve bearings for contamination prevention. They are made of compressed felt material and provide a barrier against the entry of contaminants such as dirt, dust, and moisture. Felt seals are effective in low to moderate speed applications and offer good resistance to abrasion. They are relatively easy to install and provide a cost-effective sealing solution for nylon sleeve bearings.

  • Rubber Seals:

Rubber seals, also known as radial lip seals or contact seals, are another type of seal used with nylon sleeve bearings. They consist of a rubber lip that makes contact with the shaft surface, creating a seal to prevent the ingress of contaminants. Rubber seals offer excellent sealing properties and can withstand higher speeds and temperature ranges compared to felt seals. They provide reliable contamination prevention and are commonly used in demanding industrial applications.

  • Metal Shields:

Metal shields, also called metal covers or shields, are used as protective barriers with nylon sleeve bearings. They are typically made of metal, such as steel or stainless steel, and are designed to cover the bearing opening partially or completely. Metal shields provide physical protection against large particles, debris, and some contaminants. They are durable and offer good resistance to impact and abrasion. Metal shields are often used in applications where frequent maintenance and inspection are required.

  • Non-Contact Seals:

Non-contact seals, also known as labyrinth seals or gap seals, are designed to prevent contamination without making direct contact with the shaft. They consist of a series of barriers or channels that create a tortuous path for contaminants, effectively sealing the bearing. Non-contact seals offer low friction and reduced heat generation, making them suitable for high-speed applications. They provide reliable contamination prevention while minimizing shaft wear and power losses.

  • Hybrid Seals:

Hybrid seals combine different sealing elements to provide enhanced contamination prevention. They may incorporate a combination of rubber seals, metal shields, or non-contact seal designs. Hybrid seals are designed to provide multiple layers of protection against various types of contaminants. They offer improved sealing performance, durability, and versatility, making them suitable for a wide range of applications where stringent contamination prevention is required.

  • Integrated Sealing Systems:

In some cases, nylon sleeve bearings may come with integrated sealing systems. These systems include specially designed seals, shields, or combination arrangements that are built into the bearing or bearing housing. Integrated sealing systems provide optimal contamination prevention and are specifically engineered for the bearing application. They offer convenience, reliability, and effective sealing performance, reducing the risk of contamination-related issues and simplifying maintenance requirements.

In summary, the various types of seals and shields used with nylon sleeve bearings for contamination prevention include felt seals, rubber seals, metal shields, non-contact seals, hybrid seals, and integrated sealing systems. The selection of the appropriate sealing solution depends on factors such as the operating environment, speed, temperature, and the level of contamination protection required. By utilizing the right sealing mechanism, nylon sleeve bearings can maintain their performance and reliability by preventing the entry of contaminants and ensuring smooth operation.

nylon sleeve bearing

What are the potential challenges or limitations of using nylon sleeve bearings in specific industries?

When considering the use of nylon sleeve bearings in specific industries, there are several potential challenges or limitations to be aware of. Here’s a detailed explanation of the challenges and limitations associated with using nylon sleeve bearings in specific industries:

  • High Load and Impact Applications:

Nylon sleeve bearings may have limitations when it comes to high load and impact applications. While nylon has good strength and load-bearing capabilities, it may not be suitable for extremely heavy loads or applications with frequent impacts. Excessive loads or impacts can cause deformation, accelerated wear, or even failure of the nylon material. In such cases, alternative bearing materials with higher load and impact resistance, such as bronze or steel, may be more appropriate.

  • Elevated Temperatures:

Nylon sleeve bearings have temperature limitations, particularly when it comes to elevated temperatures. Nylon begins to soften and lose its mechanical properties at higher temperatures. Prolonged exposure to temperatures above its recommended operating range can result in deformation, reduced load capacity, and compromised performance of the bearings. In industries where high temperatures are common, such as automotive or industrial applications, alternative bearing materials capable of withstanding higher temperatures, such as specialized polymers or self-lubricating metals, may be more suitable.

  • Chemical Exposure:

While nylon sleeve bearings offer good resistance to certain chemicals, they may not be suitable for all types of chemical exposures. Nylon can be adversely affected by strong acids, strong bases, and certain solvents. In industries where extensive exposure to corrosive or chemically aggressive environments is expected, alternative bearing materials specifically designed for chemical resistance, such as PTFE (polytetrafluoroethylene) or stainless steel, may be more appropriate.

  • Hydrolysis:

Nylon is susceptible to hydrolysis, a chemical reaction that occurs when nylon comes into contact with water or high humidity over extended periods. Hydrolysis can lead to a decrease in mechanical properties, dimensional changes, and overall degradation of the nylon material. In industries where prolonged exposure to moisture or high humidity is expected, alternative bearing materials with better resistance to hydrolysis, such as acetal or PEEK (polyether ether ketone), may be more suitable.

  • Speed Limitations:

Nylon sleeve bearings have speed limitations due to factors such as heat generation and potential for material deformation at higher speeds. In high-speed applications, the centrifugal forces and generated heat can cause the nylon material to soften or warp, leading to reduced bearing performance and potential failure. If high-speed operation is a requirement, alternative bearing materials designed for high-speed applications, such as specialized self-lubricating metals or ceramic hybrids, may be more suitable.

In summary, while nylon sleeve bearings offer numerous advantages, they also have potential challenges and limitations in specific industries. Factors such as high loads, impacts, elevated temperatures, chemical exposure, hydrolysis, and speed limitations can affect the performance and suitability of nylon bearings. It is important to carefully assess the application requirements, operating conditions, and potential limitations of nylon sleeve bearings and consider alternative bearing materials when necessary to ensure optimal performance and longevity in specific industries.

nylon sleeve bearing

Can you describe the load-carrying capacity and load ratings of nylon sleeve bearings?

Nylon sleeve bearings have specific load-carrying capacities and load ratings that are important considerations when selecting and designing for their use. Here’s a detailed description of the load-carrying capacity and load ratings of nylon sleeve bearings:

Nylon sleeve bearings are designed to support loads and provide a low-friction interface between moving parts. The load-carrying capacity of a nylon bearing refers to its ability to withstand and distribute the applied loads without excessive deformation or failure. The load ratings provide guidance on the maximum loads that a bearing can handle under specific operating conditions.

The load-carrying capacity of nylon sleeve bearings depends on various factors, including the bearing’s dimensions, design, material composition, and operating conditions. Nylon bearings are typically designed for moderate to light loads. They are suitable for applications where the loads are within the specified limits and do not exceed the bearing’s capabilities.

When considering the load ratings of nylon sleeve bearings, there are two primary ratings to consider:

  • Static Load Rating:

The static load rating indicates the maximum load that a nylon bearing can withstand without experiencing permanent deformation. It represents the maximum load that can be safely applied to the bearing when it is stationary or subjected to very slow rotational or oscillatory motions. Exceeding the static load rating can lead to excessive deformation, increased friction, and potential bearing failure.

  • Dynamic Load Rating:

The dynamic load rating specifies the maximum load that a nylon bearing can safely handle under constant rotational or oscillatory motion. It represents the load capacity when the bearing is in continuous motion. The dynamic load rating takes into account the bearing’s ability to distribute the applied load, minimize friction, and maintain reliable operation over an extended period. Exceeding the dynamic load rating can lead to premature wear, increased friction, and potential bearing failure.

It’s important to note that the load ratings provided for nylon sleeve bearings are typically determined through standardized testing procedures, such as those specified by the American National Standards Institute (ANSI) or International Organization for Standardization (ISO). These ratings serve as guidelines to help engineers and designers select bearings that can meet the expected load requirements of their specific applications.

It’s also crucial to consider other factors that can affect the load-carrying capacity of nylon bearings, such as temperature, speed, lubrication, and environmental conditions. Operating beyond the recommended load ratings or in harsh conditions can reduce the bearing’s performance, increase wear, and potentially lead to premature failure.

In summary, the load-carrying capacity and load ratings of nylon sleeve bearings depend on various factors, including the bearing design, dimensions, material composition, and operating conditions. Nylon bearings are typically designed for moderate to light loads and have specified static and dynamic load ratings. Adhering to the recommended load ratings and considering other operating factors are essential for ensuring reliable and long-lasting performance of nylon sleeve bearings.

China wholesaler SA090aro Chrome Steel Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings   bearing assemblyChina wholesaler SA090aro Chrome Steel Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings   bearing assembly
editor by CX 2024-02-19

China factory Ka090cpo Chrome Steel CZPT Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings bearing bronze

Product Description

KAA  opening  type  4.762mm(CP0/XP0/AR0

KAA571,KAA015,KAA017

KA  opening  type 6.35mm(CP0/XP0/AR0

KA571,KA571,KA030,KA035,KA040,KA042,

KA045,KA050,KA055,KA060,KA065,KA070,

KA075,KA080,KA090,KA100,KA110,KA120,

KA140,KA180,KA200

KB  opening  type 7.938mm(CP0/XP0/AR0

KB571,KB571,KB030,KB035,KB040,KB042,

KB045,KB050,KB055,KB060,KB065,KB070,

KB075,KB080,KB090,KB100,KB110,KB120,

KB140,KB180,KB200

KC opening  9.525mm(CP0/XP0/AR0

KC040,KC042,KC045,KC050,KC055,KC060,

KC065,KC070,KC075,KC080,KC090,KC100,

KC110,KC120,KC140,KC180,KC200

KD   opening   type 12.7mm(CP0/XP0/AR0

KD040,KD042,KD045,KD050,KD055,KD060,

KD065,KD070,KD075,KD080,KD090,KD100,

KD110,KD120,KD140,KD180,KD200

KF  opening  type  19.05mm(CP0/XP0/AR0

KF040,KF042,KF045,KF050,KF055,KF060,

KF065,KF070,KF075,KF080,KF090,KF100,

KF110,KF120,KF140,KF180,KF200

KG  open  25.4mm(CP0/XP0/AR0

KG040,KG042,KG045,KG050,KG055,

KG060,KG065,KG070,KG075,KG080,

KG090,KG100,KG110,KG120,KG140,

KG180,KG200,KG250,KG300,KG400

JA   seals 6.35mm(CP0/XP0/A

JHA571,JHA015,JA571,JA571,JA030,JA035,

JA040,JA042,JA045,JA050,JA055,JA060,JA065

JB  seals 7.938mm(CP0/XP0/AR

JB571,JB571,JB030,JB035,JB040,JB042,

JB045,JB050,JB055,JB060,JB065

JU  seals 12.7mm(CP0/XP0/AR

JU040,JU042,JU045,JU050,JU055,JU060,

JU065,JU070,JU075,JU080,JU090,JU100,

JU110,JU120

JG   seals  25.4mm(CP0/XP0/AR0

JG120,JG140,JG160,JG180

5mm-360mm   is  8mm,13mm,20mm

 thick 8mm    (CP0/XP0/

K57108,K05008,K06008,K07008,K08008,K09008,K10008,K11008,

K12008,K13008,K14008,K15008,K16008,K17008,K1K20008,K25008,K30008,K32008,K34008,K36  thick 13mm  open (CP0/XP0/

K57113,K05013,K06013,K 0571 3,K08013,K 0571 3,K10013,K11013,

K12013,K13013,K14013,K15013,K16013,K17013,K18013,K19013,

K20013,K25013,K30013,K32013,K34013,K36013

T20mm(CP0/XP0/

K571hinck  20,K 0571 1,K06571,K5711,K 0571 1,K09571,K1571,K11571,

K12571,K13571,K14571,K15571,K16571,K17571,K18571,K19571,

K2571,K25571,K3571,K32571,K34571,K36571

 thick 8mm   Seals (CP0/XP0/ARO

J57108,J05008,J06008,J07008,J08008,J09008,J10008,J11008,

J12008,J13008,J14008,J15008,J16008,J1700

/* 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

Precision: P0.P6.P5
Cage Material: Brass.Nylon Plastic Full Ball
Outer Ring: Chrome Steel
Inner Ring: Gcr15
Weight: 0.172kg
Structure: Xpo Aro Cpo

nylon sleeve bearing

How do innovations and advancements in nylon sleeve bearing technology impact their use?

The constant innovations and advancements in nylon sleeve bearing technology have a significant impact on their use. Here’s a detailed explanation of how these advancements influence the application and performance of nylon sleeve bearings:

  • Improved Performance:

Innovations and advancements in nylon sleeve bearing technology often lead to improved performance characteristics. Manufacturers continually develop new formulations, additives, and processing techniques to enhance the strength, load capacity, wear resistance, and overall performance of nylon bearings. These improvements enable nylon sleeve bearings to withstand higher loads, operate at elevated temperatures, resist chemicals, and exhibit better dimensional stability, resulting in enhanced performance and reliability in various applications.

  • Expanded Application Range:

Advancements in nylon sleeve bearing technology have expanded their application range. With improved performance capabilities, nylon bearings can now be used in a wider range of industries and applications. They are increasingly employed in automotive, aerospace, machinery, electronics, and many other sectors where low-friction, self-lubricating, and lightweight bearing solutions are desired. The expanded application range allows nylon sleeve bearings to replace traditional bearing materials in diverse environments and contribute to more efficient and cost-effective designs.

  • Specialized Solutions:

Innovations in nylon sleeve bearing technology have resulted in the development of specialized solutions for specific industries or challenging applications. Manufacturers have introduced nylon bearings with tailor-made properties to address unique requirements. For example, there are nylon sleeve bearings specifically engineered for high-speed applications, extreme temperatures, corrosive environments, or heavy loads. These specialized solutions provide industries with reliable and durable bearing options that are optimized for their specific needs.

  • Reduced Maintenance and Lubrication:

Advancements in nylon sleeve bearing technology have contributed to reduced maintenance and lubrication requirements. Self-lubricating properties have been enhanced through the incorporation of solid lubricants or additives within the nylon material. This reduces the need for frequent lubrication and minimizes the risk of lubricant contamination or breakdown. The improved self-lubrication characteristics of nylon bearings result in lower maintenance costs, extended bearing life, and improved operational efficiency in various applications.

  • Environmental Friendliness:

Innovations in nylon sleeve bearing technology have also focused on improving their environmental friendliness. Manufacturers are developing sustainable and eco-friendly nylon formulations by utilizing recycled materials or bio-based polymers. These advancements align with the increasing demand for environmentally conscious solutions in industries. The use of eco-friendly nylon sleeve bearings contributes to reducing the environmental impact of industrial operations and promotes sustainable practices.

In summary, innovations and advancements in nylon sleeve bearing technology have a profound impact on their use. Improved performance characteristics, expanded application range, specialized solutions, reduced maintenance and lubrication requirements, and environmental friendliness are among the key benefits arising from these advancements. As the technology continues to evolve, nylon sleeve bearings are becoming more versatile, reliable, and sustainable, meeting the evolving needs of various industries and driving advancements in engineering and design practices.

nylon sleeve bearing

Can you provide examples of machinery or equipment that frequently use nylon sleeve bearings?

Several types of machinery and equipment frequently utilize nylon sleeve bearings due to their advantageous properties and suitability for specific applications. Here are some examples of machinery and equipment where nylon sleeve bearings are commonly employed:

  • Electric Motors: Nylon sleeve bearings are often found in electric motors, where they provide support and reduce friction between rotating components such as shafts and bushings. The self-lubricating property of nylon helps ensure smooth operation and longevity of the motor.
  • Home Appliances: Many home appliances utilize nylon sleeve bearings to facilitate smooth and quiet operation. Examples include washing machines, dryers, dishwashers, vacuum cleaners, and fans. Nylon bearings help reduce noise, minimize friction, and enhance the overall performance of these appliances.
  • Automotive Applications: Nylon sleeve bearings are commonly used in various automotive applications. They can be found in windshield wiper mechanisms, window regulators, seat adjusters, door hinges, and throttle linkages. Nylon bearings offer low friction, durability, and resistance to moisture and corrosion, making them suitable for automotive environments.
  • Conveyor Systems: Nylon sleeve bearings are utilized in conveyor systems, where they support the movement of conveyor belts or rollers. They help reduce friction, facilitate smooth and efficient material handling, and contribute to the overall reliability of the conveyor system.
  • Fitness Equipment: Many types of fitness equipment, such as treadmills, elliptical trainers, and stationary bikes, incorporate nylon sleeve bearings. These bearings support the rotation of pedal cranks, flywheels, and other moving parts, ensuring smooth and quiet operation during exercise routines.
  • Office Equipment: Nylon sleeve bearings are commonly used in office equipment like printers, copiers, scanners, and shredders. They help reduce friction in moving components, such as paper feed mechanisms and scanning assemblies, resulting in smoother operation and improved reliability.
  • Industrial Machinery: Nylon sleeve bearings find applications in various industrial machinery, such as pumps, compressors, blowers, and machine tools. They provide support, reduce friction, and contribute to the overall efficiency and performance of these machines.
  • Medical Devices: Nylon sleeve bearings are used in medical devices and equipment, including surgical instruments, laboratory equipment, imaging systems, and patient beds. Their self-lubricating property, low friction, and resistance to chemicals make them suitable for medical environments.

These examples demonstrate the versatility and wide-ranging applications of nylon sleeve bearings in various industries. The specific design and material composition of nylon bearings may vary depending on the requirements and operating conditions of each application.

In summary, nylon sleeve bearings are commonly found in electric motors, home appliances, automotive applications, conveyor systems, fitness equipment, office equipment, industrial machinery, and medical devices. Their use in these applications helps reduce friction, ensure smooth operation, enhance durability, and improve overall performance.

nylon sleeve bearing

How does the self-lubricating property of nylon contribute to smooth operation in bearings?

The self-lubricating property of nylon plays a crucial role in ensuring smooth operation in bearings. Here’s a detailed explanation of how the self-lubricating property of nylon contributes to smooth operation:

Nylon is a thermoplastic material that exhibits inherent self-lubricating properties. It has a low coefficient of friction, which means it can reduce the resistance between moving parts, resulting in smoother operation. The self-lubricating property of nylon in bearings offers several advantages:

  • Reduced Friction:

The self-lubricating property of nylon helps to reduce friction between the bearing surfaces. Friction is a force that opposes the relative motion between two surfaces in contact. By reducing friction, nylon bearings experience less resistance during movement, resulting in smoother and more efficient operation. This reduction in friction also helps to minimize wear and extend the lifespan of the bearing.

  • Elimination of External Lubrication:

Unlike many other types of bearings, nylon sleeve bearings do not require external lubrication such as oil or grease. The self-lubricating property of nylon allows it to generate a thin film of lubricant on its surface during operation. This lubricating film reduces the direct contact between the bearing surfaces, minimizing friction and wear. The elimination of external lubrication simplifies maintenance requirements and reduces the risk of contamination or leakage in certain applications.

  • Consistent Lubrication:

Nylon’s self-lubricating property provides consistent lubrication throughout the bearing’s lifespan. As the bearing moves, the friction generates heat, which helps to melt the nylon material slightly. This process releases lubricating particles within the bearing, ensuring a continuous supply of lubrication. This self-lubrication mechanism helps to maintain smooth operation and reduces the risk of dry running or inadequate lubrication that can lead to increased friction, wear, and potential bearing failure.

  • No Contamination or Leaking:

The self-lubricating property of nylon eliminates the need for external lubricants that can attract dust, dirt, or other contaminants. This is particularly beneficial in applications where cleanliness is critical, such as in the food and beverage industry or medical equipment. Nylon bearings do not suffer from lubricant leakage or contamination issues, ensuring a cleaner and more hygienic operating environment.

Overall, the self-lubricating property of nylon in bearings contributes significantly to smooth operation. It reduces friction, eliminates the need for external lubrication, provides consistent lubrication, and minimizes the risk of contamination or leaking. These advantages make nylon sleeve bearings well-suited for applications where smooth and efficient operation is essential.

China factory Ka090cpo Chrome Steel CZPT Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings   bearing bronzeChina factory Ka090cpo Chrome Steel CZPT Catalog Ultra Reali Slim Wall Roller Silverthin Ball Tapered Thrust Angular Contact Metric Sleeve Thin Section Bearings   bearing bronze
editor by CX 2024-02-17