51284 F
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51284 F
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
110 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
420 mm
Bore diameter tolerance
-0.045mm to 0
Outside diameter
580 mm
Outside diameter tolerance
-0.05mm to 0
Width
130 mm
Width tolerance
+0.05mm to -0.5mm
Chamfer dimension
5 mm
Ball & Washer Dimensions
Housing washer inner diameter
426 mm
Shaft washer outer diameter
574 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
198900 lbf
Axial static load rating
1237500 lbf
Limiting speed
0.6 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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51284 F Bearing Product Overview & Core Advantages
The 51284 F is a metric thrust ball bearing engineered for demanding axial load applications. This open-type bearing is designed to accommodate high thrust loads in a single direction with exceptional reliability. Its robust construction using 52100 Chrome Steel for both rings and balls ensures high durability and long service life, making it ideal for heavy-duty industrial environments where precision and performance are critical.
51284 F Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 51284 | Denotes the standard bearing size series with a 420 mm bore. |
| F | Indicates a machined brass cage, which provides high strength and stability, suitable for demanding operational conditions. |
51284 F Bearing Structural Features & Performance Benefits
- High Load Capacity: Engineered with a 52100 Chrome Steel construction, this bearing delivers a high axial dynamic load rating of 198,900 lbf and an exceptional axial static load rating of 1,237,500 lbf, making it capable of handling intense thrust forces.
- Optimized Cage Design: The stainless steel cage (F suffix) ensures precise ball guidance, reduces friction, and contributes to the bearing's operational stability.
- Precision Tolerances: Features tight dimensional tolerances on the bore diameter and outside diameter, ensuring a precise fit and reliable performance in the assembly.
- Wide Temperature Range: Operates effectively within a temperature range of -30°C to 110°C, providing versatility for various industrial climates.
- Compliant Materials: The bearing is ROHS and REACH compliant, meeting international environmental and safety standards.
51284 F Bearing Typical Application Areas
This thrust ball bearing is ideally suited for heavy machinery and equipment requiring robust axial load support, including:
- Heavy-Duty Thrust Applications in industrial gearboxes and large turbines.
- Vertical Pumps and Compressors where significant axial forces are present.
- Construction and Mining Equipment such as crane hooks and excavator swing mechanisms.
- Large Industrial Fans and Blowers that require reliable thrust load management.
