FAQ

Selecting the right bearing for your application is crucial to ensure optimal performance, reliability, and longevity. Below are key steps and considerations to help guide you in making an informed decision.

Understand Your Application Requirements

• Speed: Determine the rotational speed (RPM) at which the bearing will operate. High-speed applications may require specific design features.
• Environmental Conditions: Consider factors such as temperature, humidity, exposure to chemicals, or contaminants. Some environments may necessitate special materials or coatings.
• Precision Requirements: High-precision applications may require bearings with tighter tolerances (e.g., higher ABEC ratings).
• Space Constraints: Ensure that the bearing fits within the available space in your design.

When choosing the specs for your design, we strongly recommend you get in touch with our team for assistance. Beining Bearings provides knowledgeable sales and expert personnel to assist in product design and selection, aiming to increase performance and ensure your company’s success.

The difference between a Normal clearance and a C3 clearance bearing lies primarily in the internal clearance (also known as radial play or axial play) within the bearing. Clearance refers to the amount of free space between the rolling elements (balls or rollers) and the raceways when the bearing is not under load. This clearance can significantly affect the performance, lifespan, and operational characteristics of the bearing.

Normal Clearance Bearing

• Definition: Normal clearance bearings are manufactured to standard clearance values specified by industry standards such as ISO or ABMA. These bearings have a typical range of internal clearance that is suitable for most applications.
• Applications: Suitable for general-purpose applications where operating temperatures remain relatively stable and loads are moderate.
• Characteristics:
  • Typically provides good performance under normal operating conditions.
  • Adequate for applications with standard thermal expansion and contraction.
  • Balanced performance in terms of speed, load capacity, and noise.

C3 Clearance Bearing

• Definition: C3 clearance bearings have a larger internal clearance compared to normal clearance bearings. The "C3" designation indicates that the bearing has been manufactured with an increased radial clearance.
• Applications: Ideal for applications where higher initial clearance is beneficial, such as:
  • Applications with high operating temperatures, which can cause thermal expansion and reduce clearance.
  • Situations where heavy loads may lead to deformation and reduced clearance.
  • Environments where slight misalignment might occur.
• Characteristics:
  • Provides better performance in high-temperature environments due to compensating for thermal expansion.
  • Reduces the risk of premature wear caused by insufficient clearance.
  • Can handle heavier loads more effectively by reducing the risk of overheating and excessive friction.
  • Often used in applications requiring greater tolerance for misalignment.

Summary of Key Differences:

Choosing Between Normal and C3 Clearance Bearings:

• Select Normal Clearance if your application operates under standard conditions with moderate loads and stable temperatures.
• Choose C3 Clearance if your application involves high temperatures, heavy loads, or potential misalignment, where maintaining sufficient clearance is crucial for optimal performance and longevity.

If you need further assistance or specific recommendations based on your application details, feel free to ask!

Bearings are pre-coated with a corrosion inhibitor lubricant that is fully compatible with the majority of industrial lubricants in use today. This protective oil film ensures the bearing remains in optimal condition during storage and transportation. As a result, there is no need to clean the bearings or remove the oil film before installation. This simplifies the mounting process and helps prevent potential contamination from cleaning agents.

An angular contact ball bearing is a type of rolling-element bearing that is designed to carry significant axial (thrust) loads as well as radial loads. These bearings are characterized by the fact that the raceways in the inner and outer rings have a specific angle relative to the bearing axis, which allows them to support combined loads—both axial and radial—at the same time.

Key Features of Angular Contact Ball Bearings:

1. Angular Design: The balls make contact with the inner and outer ring raceways at a defined angle, known as the contact angle. Common contact angles are 15°, 25°, and 40°. The greater the contact angle, the higher the axial load-carrying capacity.

2. Load Distribution: Due to their design, angular contact ball bearings can handle heavier axial loads than deep groove ball bearings, especially when the axial load is in one direction. For applications requiring bidirectional axial loads, two or more angular contact ball bearings are typically used in pairs or sets, facing opposite directions.

3. High-Speed Capability: These bearings are capable of high-speed operation because they use balls as the rolling elements, which generate less friction compared to other types of rolling elements.

4. Precision: Angular contact ball bearings are often manufactured to very tight tolerances, making them suitable for precision applications such as machine tool spindles, gearboxes, and industrial motors.

5. Preload Option: They can be preloaded to reduce play and increase rigidity, which is beneficial in applications where precise positioning is critical.

6. Materials and Lubrication: Typically made from high-quality steel, these bearings may also be available in ceramic or stainless steel for special applications. Proper lubrication is essential for optimal performance and longevity.

Applications:

Angular contact ball bearings are widely used in industries where high-speed and high-precision operations are required, such as aerospace, automotive, machine tools, and robotics.

A crossed roller bearing, also known as a crossed roller slide or crossed roller linear motion bearing, is a type of rolling-element bearing designed to provide high-precision linear motion with minimal friction. These bearings are widely used in applications requiring smooth, accurate movement along a straight line, such as in machine tools, robotics, and precision positioning systems.

Key Features of Crossed Roller Bearings:

1. Design and Structure:

   • Rolling Elements: Instead of using balls, crossed roller bearings use cylindrical rollers that are arranged perpendicular to each other in a crisscross pattern (90 degrees to each other). This arrangement allows the bearing to support loads in multiple directions.
   • V-Groove Raceways: The rollers run between V-groove raceways machined into the inner and outer rings. The V-shaped grooves ensure precise contact with the rollers, providing excellent load distribution and stability.
   • Cage: A cage or separator keeps the rollers evenly spaced and prevents them from rubbing against each other, reducing friction and wear.

2. Load-Carrying Capacity:

   • High Load Capacity: Due to the large contact area between the rollers and the raceways, crossed roller bearings can handle higher loads compared to ball bearings of similar size.
   • Multi-Axis Load Support: They can support radial, axial, and moment loads simultaneously, making them suitable for complex loading conditions.

3. Precision and Rigidity:

   • High Precision: Crossed roller bearings offer superior precision due to their design, which minimizes deflection and ensures accurate linear motion.
   • High Rigidity: The arrangement of the rollers provides high rigidity, which is crucial for maintaining accuracy in precision applications.

4. Low Friction:

   • The crossed roller design results in low friction, enabling smooth and efficient linear motion, even at high speeds.

5. Compact Design:

   • Despite their high load capacity and precision, crossed roller bearings are relatively compact, making them suitable for space-constrained applications.

6. Materials:

   • Typically made from high-quality steel, but they can also be manufactured from stainless steel or other materials depending on the application requirements.

Applications:

Crossed roller bearings are ideal for applications that require high precision, smooth motion, and reliable performance. Common applications include:

• Machine Tools: For guiding linear axes in milling machines, grinders, and lathes.
• Robotics: In robotic arms and positioning systems where accuracy and repeatability are critical.
• Metrology Equipment: For precise measurement instruments like coordinate measuring machines (CMMs).
• Semiconductor Manufacturing: In wafer handling equipment and inspection systems.
• Automation Systems: For linear stages and slides in automated manufacturing processes.

Summary:

Crossed roller bearings excel in applications requiring high-precision linear motion, high load capacity, and multi-axis load support. Their design features contribute to smooth, accurate movement and high rigidity, making them indispensable in industries that demand top-tier performance and reliability.

The deep groove ball bearing is one of the most common types of rolling-element bearings, designed to support both radial and axial loads. These bearings are characterized by their deep raceway grooves that extend almost to the diameter of the balls, which allows them to carry significant loads in a compact design.

Key Features of Deep Groove Ball Bearings:

1. Design and Structure:

   • The inner and outer rings have deep grooves that closely match the curvature of the balls, allowing for effective load distribution.

   • They consist of an inner ring, an outer ring, a set of balls, and usually a cage to keep the balls evenly spaced.

2. Load-Carrying Capacity:

   • Radial Loads: Deep groove ball bearings can handle substantial radial loads due to the close fit between the balls and the raceways.

   • Axial Loads: They can also support axial (thrust) loads in both directions, though their axial load capacity is generally lower than that of angular contact ball bearings.

3. High-Speed Performance:

   • Due to their low-friction design and ability to operate with minimal clearance, these bearings are capable of very high-speed operation, making them suitable for applications requiring rapid rotation.

4. Low Noise and Vibration:

   • Their design contributes to smooth and quiet operation, which is beneficial in applications where noise and vibration need to be minimized.

5. Ease of Use and Maintenance:

   • These bearings are relatively easy to install and maintain. They often come pre-lubricated and sealed, reducing the need for maintenance and extending service life.

6. Wide Range of Sizes and Configurations:

   • Available in a wide range of sizes and configurations, including open, shielded, and sealed versions, making them adaptable to various applications.

7. Materials:

   • Typically made from chrome steel, but they can also be manufactured from stainless steel or ceramic materials for specific applications such as corrosive environments or high-temperature conditions.

Applications:

Deep groove ball bearings are widely used across numerous industries due to their versatility, reliability, and cost-effectiveness. Common applications include:

• Automotive Industry: In components like wheel bearings, alternators, and electric motors.

• Household Appliances: Such as washing machines, refrigerators, and air conditioners.

• Industrial Machinery: Including conveyor systems, pumps, and fans.

• Consumer Electronics: For devices like hard drives and DVD players.

Summary:

Deep groove ball bearings offer a balance of performance and simplicity, making them a popular choice for a wide array of applications where reliable radial and axial load support is needed, along with high-speed capability and low noise levels.

If the bearings you require are in our stock, we do not have a minimum order quantity requirement. If the bearings you need are standard bearings but we do not have them in stock, or if they are non-standard bearings, then we do have a minimum order quantity requirement.

Bearings are mechanical components designed to support relative motion between parts of a machine while minimizing friction. There are several types of bearings, but four common categories are widely recognized:

1. Ball Bearings

• Description: Ball bearings use balls to maintain the separation between the bearing races. The balls roll between the inner and outer races, reducing rotational friction.
• Applications: Suitable for applications involving both radial and thrust loads. Commonly used in electric motors, pumps, and domestic appliances.
• Types:
  • Deep groove ball bearings
  • Angular contact ball bearings
  • Self-aligning ball bearings

2. Roller Bearings

• Description: Roller bearings use cylinders (rollers) instead of balls to support the load. Rollers have a greater surface area in contact with the races, allowing them to handle heavier loads than ball bearings.
• Applications: Ideal for heavy-duty applications that involve significant radial or axial loads. Used in conveyor systems, gearboxes, and automotive wheels.
• Types:
  • Cylindrical roller bearings
  • Tapered roller bearings
  • Spherical roller bearings
  • Needle roller bearings

3. Thrust Bearings

• Description: Thrust bearings are specifically designed to handle axial (thrust) loads, which act parallel to the shaft. They can also handle some radial loads but are primarily used for axial forces.
• Applications: Common in applications where axial loads are predominant, such as in propeller shafts, turbines, and helicopter transmissions.
• Types:
  • Thrust ball bearings
  • Cylindrical thrust roller bearings
  • Tapered thrust roller bearings
  • Spherical thrust roller bearings

4. Plain Bearings (Bushings)

• Description: Plain bearings, also known as bushings or sleeve bearings, consist of a simple cylindrical sleeve that supports a rotating shaft. They do not contain rolling elements like balls or rollers.
• Applications: Suitable for low-speed applications and environments where contamination is a concern. Used in engines, pumps, and hydraulic cylinders.
• Types:
  • Bronze bushings
  • Oil-impregnated bronze bushings
  • PTFE-lined bushings
  • Babbitt metal bushings

Summary

Each type of bearing has its own advantages and is suited to different applications based on load type, speed, and environmental conditions. Choosing the right bearing type is crucial for ensuring optimal performance and longevity in various mechanical systems.

If you need more detailed information on any specific type of bearing or have other questions, feel free to ask!

An industrial bearing is a mechanical component used in industrial machinery and equipment to support rotating or moving parts, reduce friction, and handle loads. Industrial bearings are critical for ensuring smooth operation, minimizing wear, and extending the lifespan of machinery in various industrial applications. They are designed to withstand harsh conditions, heavy loads, high speeds, and challenging environments often found in industrial settings.

Key Characteristics of Industrial Bearings:

1. Durability and Strength:

   • Industrial bearings are built to handle significant radial and axial loads, as well as shock loads that can occur in heavy-duty applications.

2. High Load Capacity:

   • They are engineered to support heavy loads, which is essential for machinery used in industries like mining, construction, and manufacturing.

3. Resistance to Environmental Factors:

   • Many industrial bearings are designed to resist contaminants such as dust, water, and chemicals, ensuring reliable performance even in harsh environments.

4. Temperature Resistance:

   • Industrial bearings often operate under extreme temperatures, from cryogenic to very high temperatures, depending on the application.

5. Long Service Life:

   • Designed for longevity, industrial bearings require minimal maintenance and can operate for extended periods without failure.

6. Precision and Reliability:

   • High precision and reliability are crucial for maintaining accurate machine performance and minimizing downtime.

Types of Industrial Bearings:

Industrial bearings come in various types, each suited to different applications based on load type, speed, and environmental conditions. Common types include:

1. Ball Bearings:

   • Used in applications requiring low friction and moderate loads. Suitable for electric motors, pumps, and domestic appliances.

2. Roller Bearings:

   • Handle heavier loads than ball bearings due to their larger contact area. Commonly used in conveyor systems, gearboxes, and automotive wheels.

3. Thrust Bearings:

   • Specifically designed to handle axial (thrust) loads. Used in turbines, propeller shafts, and helicopter transmissions.

4. Plain Bearings (Bushings):

   • Simple cylindrical sleeves that support rotating shafts without rolling elements. Suitable for low-speed applications and environments where contamination is a concern.

5. Linear Bearings:

   • Facilitate linear motion and are commonly used in automation equipment, robotic arms, and CNC machines.

6. Spherical Bearings:

   • Allow for angular misalignment and are used in applications where alignment is difficult to maintain, such as in agricultural machinery and construction equipment.

Applications of Industrial Bearings:

• Manufacturing: Conveyor systems, assembly lines, and material handling equipment.

• Mining and Construction: Excavators, bulldozers, and mining drills.

• Automotive Industry: Engine components, steering systems, and wheel hubs.

• Aerospace: Aircraft engines, landing gear, and control systems.

• Energy Sector: Wind turbines, generators, and power transmission systems.

• Food and Beverage Processing: Packaging machines, conveyors, and mixers.

Summary

Industrial bearings play a vital role in ensuring the efficient and reliable operation of machinery across various industries. Their durability, load capacity, resistance to environmental factors, and precision make them indispensable components in modern industrial applications. Choosing the right type of industrial bearing depends on the specific requirements of the machinery and operating conditions.

If you have more detailed questions about industrial bearings or need assistance selecting the appropriate type for a specific application, feel free to ask!

Angular contact ball bearings and deep groove ball bearings are both types of ball bearings, but they have distinct differences in design, performance characteristics, and applications. Here’s a detailed comparison:

1. Design Differences

Deep Groove Ball Bearings

• Raceway Geometry: Both the inner and outer rings have deep grooves that extend over more than half the diameter of the balls, providing good support for the balls.

• Load Distribution: The load is distributed over a larger area due to the deeper raceways, which allows these bearings to handle radial loads effectively while also supporting moderate axial (thrust) loads in both directions.

• Contact Angle: Typically have a 0° contact angle, meaning the load is applied directly radially.

Angular Contact Ball Bearings

• Raceway Geometry: The raceways are designed with a specific contact angle (usually between 15° and 45°), allowing the balls to make point contact at an angle rather than line contact as in deep groove bearings.

• Load Distribution: Because of the contact angle, angular contact bearings can handle significant axial (thrust) loads in one direction along with radial loads. They are not suitable for handling thrust loads in both directions without paired arrangements.

• Contact Angle: Comes with a defined contact angle, typically ranging from 15° to 45°, which influences their ability to handle axial loads.

2. Load Capacity and Direction

Deep Groove Ball Bearings

• Radial Loads: Excellent for radial loads.

• Axial Loads: Can handle moderate axial loads in both directions.

• Combined Loads: Suitable for combined radial and axial loads, especially when the axial load is relatively small compared to the radial load.

Angular Contact Ball Bearings

• Radial Loads: Good for radial loads but not as strong as deep groove ball bearings.

• Axial Loads: Excellent for heavy axial loads in one direction, particularly useful when the axial load is significant compared to the radial load.

• Combined Loads: Best suited for combined loads where axial loads dominate or are significant.

3. Speed Capability

Deep Groove Ball Bearings

• Generally offer higher speed capabilities compared to angular contact ball bearings due to their simpler design and lower internal friction.

Angular Contact Ball Bearings

• Can operate at high speeds but may be limited by preload requirements and the need to manage axial loads carefully.

4. Preload

Deep Groove Ball Bearings

• Usually do not require preload and can operate effectively under light loads.

Angular Contact Ball Bearings

• Often require preload to optimize performance, especially when used in pairs to handle axial loads in both directions. Preload ensures proper contact and load distribution.

5. Applications

Deep Groove Ball Bearings

• Commonly used in electric motors, pumps, household appliances, and automotive applications where moderate radial and axial loads are present.

Angular Contact Ball Bearings

• Preferred in applications requiring high axial load capacity in one direction, such as gearboxes, machine tool spindles, and pump shafts.

Summary

• Deep Groove Ball Bearings are versatile, handling moderate radial and axial loads in both directions, and are commonly used in general-purpose applications.

• Angular Contact Ball Bearings excel in applications with significant axial loads in one direction and can handle combined loads where axial forces are dominant.

Choosing between the two depends on the specific load conditions, speed requirements, and application needs. If you need further assistance in selecting the right bearing type for your application, feel free to ask!

Preventing bearing overheating is crucial for ensuring smooth operation and extending the life of your machinery. Here are some effective methods to keep bearings from overheating:

1. Proper Lubrication

• Use the Right Amount of Grease: Ensure you use the correct amount of grease. Too much or too little can cause problems. Generally, fill about 30% to 50% of the free space in the bearing with grease.

• Choose the Right Grease: Select a grease type that suits your operating conditions and temperature range. Make sure it remains stable under your working conditions.

2. Regular Maintenance

• Check Lubrication Condition: Regularly inspect the condition of the grease to ensure it hasn’t degraded or dried out. Replace or replenish as needed.

• Clean Out Old Grease: Remove old grease before adding new grease to avoid overfilling.

3. Monitor Temperature

• Install Temperature Sensors: Place temperature sensors at critical points to monitor bearing temperatures in real-time. Take immediate action if temperatures exceed safe limits.

• Measure Temperature Regularly: If you don’t have sensors, use a handheld thermometer to check bearing temperatures periodically.

4. Keep It Clean

• Prevent Contamination: Keep the bearing and its surroundings clean to prevent dust, water, and other contaminants from entering.

• Inspect Seals: Regularly check seals to ensure they effectively block external contaminants.

5. Proper Installation

• Follow Installation Guidelines: Install bearings strictly according to the manufacturer’s guidelines to ensure proper alignment and fixation.

• Avoid Over-Tightening: Do not overtighten bearings, as this increases friction and can lead to overheating.

6. Optimize Cooling Systems

• Use Cooling Devices: In high-temperature environments, consider using cooling devices like fans or cooling sleeves to help dissipate heat.

• Ensure Good Ventilation: Make sure there’s adequate airflow around the machine to assist in natural cooling.

7. Manage Loads

• Control Load: Ensure bearings do not carry loads exceeding their design capacity. Overloading increases friction and can cause overheating.

• Distribute Load Evenly: Balance the load evenly across all bearings to avoid localized overloading.

8. Select the Right Bearings

• Choose Based on Application: Select bearings suitable for your specific application, considering factors like size, material, and design. For high-temperature applications, choose bearings made from heat-resistant materials.

Summary

By ensuring proper lubrication, regular maintenance, temperature monitoring, cleanliness, correct installation, optimized cooling, load management, and selecting the right bearings, you can effectively prevent bearing overheating and ensure reliable operation.

If you need more detailed guidance or have other questions, feel free to ask!

Seals and Shields

• RS, 2RS, 2RSH, 2RS1, RSR, 2RSR: These indicate that the bearing has rubber seals. "RS" means there's a seal on one side, while "2RS" indicates seals on both sides.

• ZZ, 2Z, ZR, Z: These denote metal shields for dust protection. "ZZ" or "2Z" means the bearing is shielded on both sides.

Internal Clearance

• C3, C4: These refer to increased internal clearance within the bearing. Bearings with these designations are suitable for high-speed operations and moderately high temperatures. However, they may not perform optimally at low speeds. Always check the data sheet for specific speed limits.

Cage Material

• TN9, TVH, TVP, G15: These suffixes indicate that the cage (which keeps the balls apart) is made from polymer materials, often glass-fiber-reinforced polyamide. This material choice can improve performance in certain applications.

Precision Standards

• ABEC: The Annular Bearing Engineers' Committee (ABEC) standard classifies bearings based on machining tolerances. While widely used, it does not cover all aspects affecting bearing performance, such as noise levels and vibration characteristics. Therefore, reliance on ABEC ratings alone may be insufficient for some applications.

High Temperature Applications

• BHT / VT: These suffixes signify that the bearing is designed for very high operating temperatures. The exact temperature range should be specified alongside this designation. Such bearings are specialized and not universally applicable.

Stainless Steel Bearings

To determine if your bearing is stainless steel:

• Look for a prefix "S" in the bearing reference number, indicating it is made from AISI 420 stainless steel. Note that stainless steel bearings are typically magnetic, unlike non-magnetic types like AISI 304.

Example: Understanding Part Number Variants

When choosing between different versions of a bearing (e.g., 6205-2RS vs. 6205-C3):

• 6205-2RS: Indicates a bearing sealed on both sides with rubber seals, providing splash protection.

• 6205-C3: Specifies a bearing with increased internal clearance, ideal for higher rotational speeds or temperatures but potentially less efficient at lower speeds.

By understanding these suffixes and prefixes, you can select the most appropriate bearing variant for your specific application needs, ensuring optimal performance and longevity. Always consult the manufacturer’s datasheet for detailed specifications and recommendations.