FAQ

As a leader in precision bearing manufacturing, Beining Intelligent Technology (Zhejiang) Co.,Ltd.,provides high-performance solutions for cutting-edge industries, combining precision, durability, and innovation to drive technological advancement.

1. Smart Home Appliances

• Air Conditioners & High-Efficiency Exhaust Fans: Ultra-thin wall deep groove ball bearings (e.g., Series 618/619) enable silent, low-vibration operation, enhancing energy efficiency and user comfort.
• Floor Scrubbers & Autonomous Cleaning Robots: Micro angular contact bearings ensure stable driving wheel performance and flexible navigation.
• Smart Curtains & Massage Chairs: Precision ball screw bearings deliver smooth extension/retraction and consistent force control.

2. New Energy Vehicles (NEVs)

• Electric Drivetrain Systems: Ceramic hybrid bearings (Si3N4) withstand extreme temperatures (-40°C to +150°C) and high RPMs (>20,000 RPM) for motor efficiency.
• Battery Thermal Management: Crossed roller bearings ensure precise coolant pump control, extending battery lifespan.

3. Low-Altitude Aircraft

• Drones & eVTOLs: Lightweight thin-wall bearings (Series 16000) meet high thrust-to-weight ratios and vibration resistance for stable flight.
• Power Transmission Systems: Tapered roller bearings (TRB) handle combined radial/axial loads in complex operating conditions.

4. Industrial Automation

• Industrial Robots:

   (1)SCARA/Cartesian Robots: Crossed roller bearings achieve sub-millimeter positioning accuracy (±0.005mm).

   (2)Collaborative Robots (Cobots): Flexible joint bearings enable safe human-machine interaction.

   (3)AGV/AMR Navigation Systems: High-precision planetary gearbox bearings ensure reliable obstacle avoidance and path tracking.

5. High-End Manufacturing Equipment

• Precision Machine Tools:

  • High-Speed Spindle Bearings: ABEC-9 angular contact ball bearings support 30,000 RPM+ machining with surface roughness ≤Ra0.02μm.

  • Magnetic Levitation Motor Alignment Platforms: Non-contact magnetic bearings enable nanometer-level precision for semiconductor lithography.

6. Aerospace & Advanced Technology

• High-Speed Maglev Trains: Ultra-precision cylindrical roller bearings (NU/NJ Series) enable frictionless operation at 600 km/h.

• Photon Chip Packaging: High-rigidity thrust ball bearings ensure micron-level alignment accuracy.

1. Check the Product Label or Manual: Look for words like "hybrid," "ceramic balls," or "silicon nitride (Si3N4) balls" in the product description or manual. This information will tell you if it's a hybrid ceramic bearing.

2. Examine the Bearing Number: Sometimes, the bearing model number might include hints that it’s a hybrid type. However, this can vary by manufacturer, so checking the specific naming rules from the maker can help.

3. Magnet Test: Ceramic doesn’t attract magnets. You can use a small magnet to see if the balls inside the bearing are attracted to it. If they are not attracted, they are likely ceramic.

4. Compare Weights: Ceramic balls are lighter than steel ones. Compare the weight of your bearing with a known steel bearing of similar size. The lighter one is probably a hybrid ceramic bearing.

5. Ask the Supplier: If you’re unsure, simply ask the supplier or check the manufacturer’s website. They can confirm whether the bearing is hybrid ceramic.

Remember to handle the bearings carefully to avoid any damage. If you're uncertain, always refer back to the original documentation or contact the supplier directly.

To make a bearing run quietly, several key factors are important:

1. High-Quality Materials

   • Using top-quality steel and ensuring smooth surfaces reduces friction and noise.

2. Precise Manufacturing

   • Tight tolerances and consistent dimensions mean all parts fit together perfectly, minimizing play and reducing noise.

3. Proper Lubrication

   • The right type and amount of lubricant help reduce friction and wear, which can cause noise. Good lubrication also helps dampen vibrations.

4. Effective Shielding/Sealing

   • Proper shields or seals keep dirt out and retain lubricant, helping the bearing run more quietly. Non-metallic shields can absorb vibrations better than metal ones.

5. Careful Design

   • Special designs, like smoother cages (the part that holds the balls apart) and optimized shapes for rolling elements, can reduce noise by ensuring smoother movement.

6. Proper Assembly and Handling

   • Careful assembly ensures everything is aligned correctly, leading to quieter operation. Proper handling during installation prevents damage that could cause noise.

7. Operating Conditions

   • Running the bearing within recommended limits for temperature and load helps maintain quiet operation. Excessive heat or load can increase noise.

Summary

A quiet bearing results from using high-quality materials, precise manufacturing, proper lubrication, effective shielding, thoughtful design, and careful handling. By focusing on these factors, manufacturers can produce bearings that operate smoothly and quietly, enhancing performance in various applications.

If you have specific questions or need advice on selecting quiet bearings for a particular application, feel free to ask!

A cylindrical roller bearing is a type of rolling-element bearing designed to carry heavy radial loads and, in some configurations, moderate axial loads. These bearings are characterized by cylindrical rollers that roll between the inner and outer rings, providing excellent load distribution and high rigidity. They are widely used in applications where high radial load capacity and precision are required.

Key Features of Cylindrical Roller Bearings:

1. Design and Structure:

   • Rolling Elements: The key feature of these bearings is the use of cylindrical rollers instead of balls. The rollers are typically arranged parallel to each other along the axis of the bearing.

   • Raceways: The inner and outer rings have raceways that are machined to match the shape of the rollers, ensuring precise contact and efficient load transfer.

   • Cage: A cage (or separator) keeps the rollers evenly spaced, preventing them from rubbing against each other and reducing friction and wear.

2. Load-Carrying Capacity:

   • High Radial Load Capacity: Cylindrical roller bearings excel at handling heavy radial loads due to the large contact area between the rollers and the raceways.

   • Axial Load Capacity: While primarily designed for radial loads, certain designs can also handle moderate axial loads. However, their axial load capacity is generally lower than that of angular contact ball bearings or tapered roller bearings.

3. Precision and Rigidity:

   • High Precision: These bearings offer high precision and rigidity, making them suitable for applications requiring accurate positioning and minimal deflection.

   • Low Friction: The design minimizes friction, allowing for smooth operation even under heavy loads.

4. Speed Capability:

   • Moderate Speeds: Cylindrical roller bearings can operate at moderate speeds. For higher-speed applications, specialized designs or materials may be necessary.

5. Materials:

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

6. Configurations:

   • Single Row: Commonly used for applications with primarily radial loads.

   • Double Row: Offers higher load capacity and can handle both radial and axial loads.

   • Full Complement: Contains more rollers without a cage, increasing load capacity but limiting speed capability.

7. Applications:

   • Industrial Machinery: Used in gearboxes, motors, and machine tools.

   • Automotive Industry: Found in components like transmissions and differential assemblies.

   • Conveyor Systems: Ideal for supporting heavy loads over long distances.

   • Wind Turbines: Used in generator and gearbox systems due to their ability to handle high radial loads.

Advantages:

• High Load Capacity: Excellent for heavy radial loads.

• Precision: Provides high precision and stability.

• Durability: Long service life under proper maintenance.

Summary:

Cylindrical roller bearings are essential components in applications requiring high radial load capacity, precision, and durability. Their design features contribute to efficient load distribution and smooth operation, making them indispensable in industries such as manufacturing, automotive, and renewable energy.

Bearing material hardness is a critical property that affects the durability, load-carrying capacity, and overall performance of bearings. Hardness is typically measured using standardized methods that involve pressing an indenter into the surface of the material and measuring the resulting indentation. The most common hardness testing methods for bearing materials are:

1. Rockwell Hardness Test

The Rockwell hardness test is one of the most widely used methods for measuring the hardness of metals, including bearing materials like steel. It measures the depth to which an indenter penetrates the material under a major load after being subjected to a preliminary minor load.

• Scale: Different scales (A, B, C, etc.) are used depending on the material type and hardness range. For bearing steels, the Rockwell C scale (HRC) is commonly used.
• Process:
  • A minor load (usually 10 kgf) is applied to seat the indenter.
  • A major load (60, 100, or 150 kgf) is then applied.
  • The difference in penetration depth between the minor and major loads is measured.
  • The result is expressed as a Rockwell hardness number.

2. Vickers Hardness Test

The Vickers hardness test uses a diamond indenter in the form of a square-based pyramid with an angle of 136 degrees between opposite faces. This method provides a hardness value that is independent of the test force within a wide range.

• Process:
  • A specified load is applied to press the diamond indenter into the material.
  • The diagonals of the resulting indentation are measured.
  • The Vickers hardness number (HV) is calculated based on the area of the indentation and the applied load.

3. Brinell Hardness Test

The Brinell hardness test involves pressing a hardened steel or carbide ball into the surface of the material under a known load. This method is particularly useful for softer materials but can also be used for harder ones like bearing steels.

• Process:
  • A steel ball of a specified diameter is pressed into the material under a known load.
  • The diameter of the resulting indentation is measured.
  • The Brinell hardness number (HB) is calculated based on the indentation diameter and the applied load.

4. Shore Hardness Test

Primarily used for rubber and plastics, the Shore hardness test is less common for metallic bearing materials. However, it might be relevant for certain types of bearing components made from non-metallic materials.

Key Points:

• Material Types: For bearing applications, materials like chrome steel, stainless steel, and ceramics are commonly tested for hardness.
• Temperature Sensitivity: Hardness can vary with temperature, so tests are often conducted at controlled temperatures.
• Surface Condition: The surface finish and condition can affect hardness readings, so it's important to ensure the test area is properly prepared.

Summary:

The choice of hardness test depends on the specific requirements of the application and the material properties. For bearing materials, the Rockwell hardness test (particularly HRC) is most frequently used due to its simplicity and suitability for hard materials like bearing steels.

If you need more detailed information about any of these methods or have specific questions about bearing material hardness testing, feel free to ask!

The ABEC rating (Annular Bearing Engineering Committee rating) is a standardized system used to specify the tolerances of ball bearings. This rating system is maintained by the American Bearing Manufacturers Association (ABMA) and is widely recognized internationally. The ABEC rating primarily addresses the precision of the bearing's dimensions and geometrical characteristics, which can affect performance in applications requiring high speeds or precise movements.

ABEC Rating Levels:

The ABEC rating system includes five tolerance classes, ranging from the least precise (ABEC-1) to the most precise (ABEC-9), although ABEC-9 is not commonly used. The standard levels are:

1. ABEC-1: Lowest precision level, suitable for general-purpose applications.
2. ABEC-3: Moderate precision, often used in industrial applications.
3. ABEC-5: Higher precision, common in high-speed electric motors and some precision machinery.
4. ABEC-7: Very high precision, frequently used in precision machinery and high-performance applications like aerospace and robotics.
5. ABEC-9: Highest precision level, rarely used outside specialized applications.

What the ABEC Rating Affects:

• Tolerances: The ABEC rating specifies tighter tolerances for internal dimensions, such as bore diameter, outer diameter, width, and track geometry.
• Performance: Bearings with higher ABEC ratings typically offer better performance in terms of speed capability, reduced noise, and smoother operation due to their higher precision.
• Cost: Higher ABEC ratings generally correspond to increased manufacturing costs due to the tighter tolerances required.

Important Considerations:

• Application Suitability: Not all applications require high-precision bearings. For many general-purpose uses, an ABEC-1 or ABEC-3 rating may be sufficient. High-precision ratings like ABEC-5, ABEC-7, or ABEC-9 are more critical in applications where minimal clearance and high rotational accuracy are necessary.
• Other Factors: While the ABEC rating focuses on dimensional and geometric precision, it does not account for other important factors such as material quality, lubrication, and seal type, all of which can significantly impact bearing performance.

Summary:

The ABEC rating is a valuable tool for specifying the precision of ball bearings, particularly in applications where high speeds or precision movements are required. However, it's important to consider the specific needs of your application and balance the benefits of higher precision against cost and other performance factors.

If you have further questions or need more detailed information about selecting the right ABEC rating for your application, feel free to ask!

The ABEC (Annular Bearing Engineering Committee) and ISO (International Organization for Standardization) precision levels are two different systems used to specify the tolerances of ball bearings. While ABEC is primarily used in North America, ISO standards are recognized internationally. Both systems define tolerance classes that determine the precision of the bearing's dimensions and geometrical characteristics.

ABEC vs. ISO Precision Levels

ABEC Ratings:

• ABEC-1: Lowest precision level.

• ABEC-3: Moderate precision.

• ABEC-5: Higher precision.

• ABEC-7: Very high precision.

• ABEC-9: Highest precision (rarely used).

ISO Ratings (ISO 492):

• P0 (Normal): Equivalent to ABEC-1; lowest precision.

• P6 (Precision): Similar to ABEC-3; moderate precision.

• P5 (High Precision): Comparable to ABEC-5; higher precision.

• P4 (Very High Precision): Similar to ABEC-7; very high precision.

• P2 (Ultra Precision): Comparable to ABEC-9; highest precision.

Equivalences Between ABEC and ISO Precision Levels:

Key Points:

• Tolerances: Both systems specify tighter tolerances as the rating increases, leading to better performance in terms of speed capability, reduced noise, and smoother operation.

• Application Suitability: Not all applications require the highest precision. For many general-purpose uses, lower precision ratings may be sufficient. High-precision ratings are more critical in applications where minimal clearance and high rotational accuracy are necessary.

• Other Factors: While both systems focus on dimensional and geometric precision, they do not account for other important factors such as material quality, lubrication, and seal type, which can significantly impact bearing performance.

Summary:

Understanding the equivalences between ABEC and ISO precision levels helps in selecting the appropriate bearing for international projects or when comparing products from different manufacturers. By knowing these equivalences, you can ensure that the bearing meets the required precision standards for your specific application.

If you need further details or have specific questions about choosing the right precision level for your application, feel free to ask!

1. Maintain Cleanliness

   • Clean Before Storage: Ensure bearings are clean before storing. Remove any contaminants like dirt or old lubricant.
   • Protect from Contaminants: Store in a clean environment free from dust, moisture, chemicals, and other contaminants.

2. Control Environmental Conditions

   • Temperature Control: Store in an area with stable temperatures between 5°C (41°F) and 25°C (77°F). Avoid extreme temperature fluctuations.
   • Humidity Control: Keep humidity levels below 60% to prevent corrosion. Use desiccants or climate-controlled storage if necessary.

3. Proper Packaging

   • Original Packaging: Store in original packaging when possible, as it provides protective materials.
   • Sealed Containers: If not using original packaging, place bearings in sealed containers or plastic bags.
   • Corrosion Protection: Apply rust-preventive oils or coatings for long-term storage. Consider VCI (vapor corrosion inhibitor) packaging.

4. Avoid Stress and Damage

   • Handle with Care: Handle gently to avoid damaging rolling elements or raceways. Do not stack heavy objects on bearings.
   • Support Properly: Support larger bearings properly to prevent deformation. Store cylindrical roller bearings horizontally.

5. Regular Inspection

   • Periodic Checks: Inspect stored bearings periodically for damage or corrosion, especially for long-term storage.
   • Rotate Bearings: Rotate large bearings occasionally to prevent flat spots from developing.

6. Documentation and Labeling

   • Keep Records: Maintain records of storage conditions and duration for each batch.
   • Label Clearly: Label bearings with type, size, manufacture date, and expected shelf life.

We holds our tolerancing that meets or exceeds large manufacturer's standards.

Removing bearing shields requires careful handling to avoid damaging the bearing components. Follow these steps for a safe and effective process:

Tools Needed:

• Small flat-head screwdriver (preferably non-magnetic)
• Needle-nose pliers
• Protective gloves and safety glasses
• Soft cloth or paper towels

Steps:

1. Prepare Your Workspace

   • Ensure you have a clean, well-lit area.
   • Wear protective gloves and safety glasses.

2. Inspect the Shield

   • Determine if the shield is press-fit, snap-on, or riveted.
   • Note any specific features that might affect removal.

3. Loosen the Shield

   • For press-fit or snap-on shields: Gently insert the flat-head screwdriver or needle-nose pliers between the shield and the bearing ring.
   • Apply even pressure around the circumference to avoid bending the shield.

4. Remove the Shield

   • Gradually work your way around the shield, prying it evenly until it loosens.
   • Carefully lift the shield off once it is sufficiently loose.

5. Inspect the Bearing

   • Check the bearing for wear, contamination, or damage after removing the shield.
   • Clean the bearing as needed using appropriate solvents and ensure it is thoroughly dry.

6. Reassemble the Bearing

   • If reusing the shield, ensure it is clean and undamaged before reinstalling.
   • Carefully reinsert the shield into place, ensuring it sits flush with the bearing ring.

Tips:

• Avoid Over-Tightening: When reinstalling, ensure the shield does not over-tighten.
• Use Non-Magnetic Tools: To prevent attracting metal particles.
• Consider Replacement: Replace the shield if it is damaged during removal.

By following these steps, you can safely and effectively remove bearing shields without causing damage to the bearing components.

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

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