51311
51300 & 51400 Series Heavy Duty Thrust Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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51311 Bearing Product Overview & Core Advantages
The 51311 metric thrust ball bearing is engineered for demanding applications requiring high-precision axial load handling. This open-type thrust bearing delivers exceptional performance in thrust load conditions with its robust construction using 52100 Chrome Steel rings and balls. Its precision-ground components ensure reliable operation in high-speed environments up to 3,200 rpm, while maintaining dimensional stability across a wide temperature range from -30°C to 110°C. The bearing's optimized design provides superior axial dynamic load capacity of 22,725 lbf and axial static load rating of 50,400 lbf, making it ideal for applications where space constraints and high load capacity are critical factors.
Model Code Technical Breakdown
| Code Segment | Technical Specification | Performance Significance |
|---|---|---|
| 51311 | Basic model designation | Standard metric thrust ball bearing series |
| Open | No seals or shields | Maximum lubrication access and heat dissipation |
| Thrust | Pure axial load design | Optimized for thrust applications only |
51311 Bearing Structural Features & Performance Benefits
Premium Material Construction: Manufactured from 52100 Chrome Steel for both rings and balls, providing exceptional hardness and wear resistance. The stainless steel cage ensures corrosion resistance and dimensional stability under high-speed operation.
Precision Engineering: Features tight dimensional tolerances with bore diameter tolerance of -0.015mm to 0 and outside diameter tolerance of -0.02mm to 0, ensuring precise fit and optimal performance in critical applications.
High-Speed Capability: The optimized cage design and premium material selection enable limiting speeds up to 3,200 rpm while maintaining operational stability and load capacity.
Thermal Performance: The open design facilitates efficient heat dissipation and allows for various lubrication methods, supporting continuous operation within the -30°C to 110°C temperature range.
51311 Bearing Typical Application Areas
- Industrial Machinery: Vertical pumps, machine tool spindles, and heavy-duty gearboxes
- Power Transmission: Thrust positions in worm gear reducers and vertical motors
- Automotive Systems: Steering mechanisms and transmission components
- Material Handling: Crane hooks, lifting equipment, and vertical shaft applications
- Precision Equipment: Medical devices and testing instruments requiring axial load support
