51320
51300 & 51400 Series Heavy Duty Thrust Ball Bearings
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Part No.
Part No.
51320
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
4.95 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.02mm to 0
Outside diameter
170 mm
Outside diameter tolerance
-0.025mm to 0
Width
55 mm
Width tolerance
+0.025mm to -0.3mm
Chamfer dimension
1.5 mm
Ball & Washer Dimensions
Housing washer inner diameter
103 mm
Shaft washer outer diameter
170 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
50625 lbf
Axial static load rating
128250 lbf
Limiting speed
1.9 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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51320 Bearing Product Overview & Core Advantages
The 51320 thrust ball bearing is a metric single-direction thrust bearing engineered for applications requiring high axial load capacity and precision. Its design is optimized to accommodate heavy unidirectional axial loads while operating at moderate speeds. Manufactured from 52100 Chrome Steel for the rings and balls, and featuring a stainless steel cage, this bearing offers excellent durability and reliable performance in demanding environments. Its open design allows for versatile lubrication options, making it suitable for high-reliability industrial applications.
51320 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51 | Indicates the bearing series, a metric thrust ball bearing design. |
| 320 | Specifies the size code, corresponding to a 100 mm bore diameter and 170 mm outside diameter. |
| Open (Seal Type) | No integral seals or shields, allowing for high-speed operation and custom lubrication schemes. |
51320 Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: The robust construction, utilizing 52100 Chrome Steel components, provides a high axial dynamic load rating of 50,625 lbf and an exceptional axial static load rating of 128,250 lbf, making it ideal for heavy thrust applications.
- Precision & Rigidity: Tight dimensional tolerances on the bore diameter and outside diameter ensure precise shaft and housing fits, contributing to system stability and high rigidity.
- Optimized Cage Design: The stainless steel cage provides superior strength and corrosion resistance, contributing to smooth operation and a limiting speed of 1,900 rpm.
- Versatile Operating Range: With a temperature range from -30°C to 110°C, this bearing is suitable for a wide array of industrial environments.
51320 Bearing Typical Application Areas
This 51320 thrust ball bearing is commonly specified in machinery and systems that require management of significant axial forces. Key applications include:
- Industrial Gearboxes
- Heavy-Duty Pumps and Compressors
- Construction and Mining Equipment
- Marine Propulsion Systems
- Presses and Stamping Machinery
