51208
51200 Series Single Direction Thrust Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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51208 Bearing Product Overview & Core Advantages
The 51208 metric thrust ball bearing is engineered for applications requiring high-precision axial load handling. Designed exclusively for thrust load direction, this bearing features an open design for optimal lubrication access and heat dissipation. Manufactured from 52100 Chrome Steel rings and balls with a Stainless Steel cage, it delivers exceptional durability and corrosion resistance. Its compact design and precise dimensional tolerances make it ideal for high-reliability applications where space constraints and axial force management are critical.
51208 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51 | Thrust ball bearing series |
| 2 | Dimension series code |
| 08 | Bore diameter code (40 mm) |
| Open | No seals or shields, enabling high-speed operation and direct lubrication |
51208 Bearing Structural Features & Performance Benefits
High Load Capacity: Engineered with 52100 Chrome Steel components, this bearing delivers exceptional axial dynamic load rating of 9945 lbf and axial static load rating of 21712 lbf, ensuring reliable performance under heavy thrust loads.
Precision Engineering: Features tight dimensional tolerances with bore diameter tolerance of -0.012mm to 0 and outside diameter tolerance of -0.015mm to 0, providing precise fit and alignment in assembly.
High-Speed Capability: The stainless steel cage and open design enable a limiting speed of 5,300 rpm, making it suitable for high-rotation applications.
Temperature Resilience: Operates effectively within a temperature range of -30° to 110°C, maintaining performance across various environmental conditions.
Compliance & Safety: Meets ROHS and REACH compliance standards, ensuring environmental safety and regulatory adherence.
51208 Bearing Typical Application Areas
- Automotive Systems: Thrust applications in transmissions and steering mechanisms
- Industrial Machinery: Machine tool spindles, presses, and positioning tables
- Power Transmission: Gearboxes and drive systems requiring axial load support
- Agricultural Equipment: Implement drives and PTO systems
- Material Handling: Conveyor systems and lifting equipment
- Precision Instruments: Medical devices and testing equipment
