51215
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51215
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
0.83 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.02mm to 0
Width
27 mm
Width tolerance
+0.02mm to -0.3mm
Chamfer dimension
1 mm
Ball & Washer Dimensions
Housing washer inner diameter
77 mm
Shaft washer outer diameter
110 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
14332 lbf
Axial static load rating
38250 lbf
Limiting speed
3.4 X 1000 rpm
Materials
Ring material
52100 Chrome Steel
Ball material
52100 Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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51215 Bearing Product Overview & Core Advantages
The 51215 thrust ball bearing is a metric single-direction thrust bearing engineered for applications requiring high axial load capacity in a single direction. Manufactured from 52100 Chrome Steel for both rings and balls, it delivers exceptional durability and wear resistance. Its core advantages include a high axial dynamic load rating of 14,332 lbf and an impressive axial static load rating of 38,250 lbf, making it an ideal solution for heavy-duty thrust applications. The open design allows for high-speed operation up to 3,400 rpm and facilitates efficient lubrication management.
51215 Bearing Model Code Explained, Specifications & Naming Convention
The model number 51215 can be broken down into its core components, which define its technical specifications:
- 5: Indicates a thrust ball bearing.
- 1: Denotes the light series, defining the cross-section.
- 215: Specifies the bore diameter. Multiply by 5 to get the bore in mm (215 * 5 = 75 mm).
- Open (No Seal Suffix): The absence of a seal suffix indicates an open bearing, optimized for high-speed performance and allowing for external lubrication systems.
51215 Bearing Structural Features & Performance Benefits
- Robust Construction for High Loads: The bearing is composed of a hardened 52100 Chrome Steel housing washer, shaft washer, and balls, providing the fundamental strength needed to handle significant thrust loads.
- High-Speed Capability: The open design, combined with a precision-ground raceway and a stainless steel cage, minimizes friction and allows for a limiting speed of 3,400 rpm, ensuring stable performance in demanding rotational applications.
- Precision Tolerances: Tight dimensional tolerances on the bore, outside diameter, and width ensure precise shaft and housing fits, contributing to reliable alignment and consistent performance.
- Wide Operating Temperature Range: The bearing is capable of operating in temperatures from -30°C to 110°C, offering versatility for various industrial environments.
51215 Bearing Typical Application Areas
This thrust ball bearing is commonly specified in machinery and systems that experience significant axial forces, including:
- Automotive Transmissions and steering systems.
- Industrial Gearboxes and power transmission units.
- Heavy-Duty Pumps and compressors.
- Construction and Agricultural Machinery.
- Cranes and Hoisting Equipment.
