51138 M
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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51138 M Bearing Product Overview & Core Advantages
The 51138 M is a metric thrust ball bearing engineered for demanding applications requiring high axial load capacity and precision operation. This open-type bearing is designed to accommodate thrust loads in a single direction, offering exceptional performance and reliability. Its construction from high-grade 52100 Chrome Steel for both rings and balls ensures superior durability and wear resistance. The 51138 M is characterized by its robust axial dynamic and static load ratings, making it an ideal solution for high-stress environments where space is constrained and operational integrity is paramount.
51138 M Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 51138 | Basic Bearing Number | Defines the core dimensions: 190mm bore, 240mm OD, 37mm width. |
| M | Stainless Steel Cage | Indicates the use of a stainless steel cage, offering high strength, corrosion resistance, and suitability for higher speed applications. |
| (No Seal Suffix) | Open Seal Type | The bearing is supplied without seals or shields, allowing for higher limiting speeds and facilitating custom lubrication schemes for specific operating conditions. |
51138 M Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: Engineered with a large contact angle and robust construction, this bearing is optimized to handle significant thrust loads, with a dynamic rating of 38700 lbf and a static rating of 159750 lbf.
- Precision Ground Components: The tight dimensional tolerances on the bore, outside diameter, and width ensure precise shaft and housing fits, contributing to stable and accurate machine operation.
- High-Speed Capability: The combination of an open design and a low-friction stainless steel cage enables a limiting speed of 2000 rpm, making it suitable for applications requiring rapid rotation.
- Durable Material Construction: The use of 52100 Chrome Steel for rolling elements and rings provides high hardness and fatigue resistance, while the stainless steel cage enhances corrosion resistance and cage integrity.
- Compliant with Environmental Directives: The bearing is ROHS and REACH compliant, ensuring it meets stringent environmental and safety standards for use in various global markets.
51138 M Bearing Typical Application Areas
The 51138 M thrust ball bearing is ideally suited for machinery and systems that experience high unidirectional axial forces. Key application areas include:
- Heavy-Duty Industrial Gearboxes
- Vertical Pumps and Compressors
- Crane Hooks and Lifting Equipment
- Machine Tool Tables and Screw Downs
- Marine Propulsion Systems
- Automotive Steering Systems (e.g., thrust applications in recirculating ball-type steering gears)
