51128
51100 & 51000 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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51128 Bearing Product Overview & Core Advantages
The 51128 is a metric thrust ball bearing engineered for applications requiring high axial load capacity in a single direction. This precision bearing features an open design, allowing for optimal lubrication access and is manufactured from high-grade 52100 Chrome Steel for both rings and balls, ensuring durability and reliable performance. Its compact design and robust construction make it ideal for high-reliability machinery where space constraints and substantial thrust loads are critical factors.
51128 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51128 | Basic model number indicating a thrust ball bearing with a 140mm bore diameter. |
| Open (Seal Type) | No integral seals or shields, designed for situations where external lubrication systems are used. |
51128 Bearing Structural Features & Performance Benefits
High Axial Load Capacity: The 51128 is designed specifically to handle significant thrust loads, with a high axial dynamic load rating of 24,975 lbf and an exceptional axial static load rating of 99,000 lbf, providing robust support in demanding applications.
Precision Engineering & Dimensional Stability: Manufactured with tight bearing tolerances (bore and OD tolerance: -0.025mm to 0), this bearing ensures precise shaft and housing fits, contributing to system accuracy and reduced vibration.
Durable Material Construction: The use of 52100 Chrome Steel for the bearing rings and balls, combined with a stainless steel cage, provides excellent resistance to wear and corrosion, enhancing the bearing's service life.
High-Speed Capability: With a limiting speed of 2,600 rpm, it is suitable for a range of high-speed thrust applications.
51128 Bearing Typical Application Areas
The 51128 thrust ball bearing is commonly specified in industries and equipment including:
- Automotive Transmissions and steering systems
- Industrial Gearboxes and power transmission units
- Heavy-Duty Machinery such as construction equipment
- Pumps and Compressors for handling axial loads
- Machine Tool Spindles and other precision engineering applications
