51228
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51228
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
4.35 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
140 mm
Bore diameter tolerance
-0.025mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.03mm to 0
Width
46 mm
Width tolerance
+0.025mm to -0.4mm
Chamfer dimension
1 mm
Ball & Washer Dimensions
Housing washer inner diameter
143 mm
Shaft washer outer diameter
197 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
46800 lbf
Axial static load rating
141750 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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51228 Bearing Product Overview & Core Advantages
The 51228 thrust ball bearing is a metric system component engineered for applications requiring high axial load capacity and precision. As a dedicated thrust bearing, it is specifically designed to accommodate heavy axial loads in a single direction, making it ideal for high-reliability scenarios where space constraints and precise axial positioning are critical. Its robust construction from 52100 Chrome Steel ensures excellent durability and performance under demanding conditions.
51228 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Interpretation |
|---|---|
| 51228 | Standard model number for a thrust ball bearing with a 140mm bore diameter. |
| Open (Seal Type) | No contact seals, allowing for higher speed capabilities and requiring an external sealing solution in contaminated environments. |
51228 Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: Engineered with 52100 Chrome Steel rings and balls, this bearing delivers a high axial dynamic load rating of 46,800 lbf and an exceptional axial static load rating of 141,750 lbf, providing reliable performance under significant thrust forces.
- Precision and Stability: Features tight dimensional tolerances on the bore diameter and outside diameter, ensuring precise fitment and stable operation in the assembly.
- High-Speed Capability: The stainless steel cage and open design contribute to a limiting speed of 1,900 rpm, suitable for various high-speed applications.
- Durability and Corrosion Resistance: The stainless steel cage offers excellent corrosion resistance, while the hardened steel components provide long service life.
- Compliance and Safety: The bearing is compliant with ROHS and REACH regulations, ensuring it meets international environmental and safety standards.
51228 Bearing Typical Application Areas
- Industrial Machinery: Heavy-duty applications such as vertical pumps, cranes, and heavy-duty gearboxes that require management of substantial axial loads.
- Automotive Systems: Components like clutch release bearings and turbocharger assemblies.
- Power Transmission: Used in thrust positions within speed reducers and other power transmission equipment.
- General Engineering: Any application demanding a robust solution for unidirectional axial loads, including jacks and presses.
