51308
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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51308 Bearing Product Overview & Core Advantages
The 51308 is a metric thrust ball bearing engineered for applications requiring high precision and reliable performance under pure axial loads. This bearing is characterized by its robust construction using 52100 Chrome Steel for both rings and balls, ensuring excellent durability and wear resistance. Its primary function is to accommodate thrust loads in a single direction, making it an ideal solution for scenarios where high axial rigidity and compact design are paramount. The open seal type facilitates high-speed operation while maintaining compliance with ROHS and REACH environmental standards.
51308 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Interpretation |
|---|---|
| 51308 | Standard metric thrust ball bearing designation, indicating the bearing dimensions (40mm bore, 78mm OD, 26mm width). |
| Open (Seal Type) | No integral seals or shields, optimized for minimal friction and high-speed performance. Requires a clean operating environment or external sealing. |
51308 Bearing Structural Features & Performance Benefits
High Load Capacity & Rigidity: The bearing is designed to handle significant axial dynamic load ratings of 13905 lbf and axial static load ratings of 27450 lbf. The use of hardened 52100 Chrome Steel components provides exceptional strength and resistance to deformation under heavy thrust loads.
High-Speed Capability: Featuring a stainless steel cage, the 51308 is engineered for stable operation at high rotational speeds, with a limiting speed of 4,300 rpm. The open design reduces friction and heat generation, contributing to its high-speed performance.
Precision & Stability: Manufactured with tight tolerances on the bore diameter, outside diameter, and width, this bearing ensures precise shaft and housing fits, leading to reduced vibration and enhanced operational accuracy in demanding applications.
Wide Operating Temperature Range: Suitable for use in environments with temperatures ranging from -30°C to 110°C, offering reliable performance across various industrial conditions.
51308 Bearing Typical Application Areas
The 51308 thrust ball bearing is commonly specified in applications requiring management of high axial loads. Key industries and machinery include:
- Automotive Systems: Used in steering mechanisms and clutch release bearings.
- Industrial Machinery: Ideal for machine tool spindles, heavy-duty pumps, and compressors where axial load support is critical.
- Power Transmission: Employed in gearboxes and thrust assemblies to handle axial forces.
- General Engineering: Suitable for any application demanding a compact, high-capacity thrust bearing solution.
