51428 M
51300 & 51400 Series Heavy Duty Thrust Ball Bearings
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Part No.
Part No.
51428 M
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
34.5 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
140 mm
Bore diameter tolerance
-0.025mm to 0
Outside diameter
280 mm
Outside diameter tolerance
-0.035mm to 0
Width
112 mm
Width tolerance
+0.025mm to -0.4mm
Chamfer dimension
4 mm
Ball & Washer Dimensions
Housing washer inner diameter
144 mm
Shaft washer outer diameter
275 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
117000 lbf
Axial static load rating
389250 lbf
Limiting speed
1 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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51428 M Bearing Product Overview & Core Advantages
The 51428 M is a high-capacity, metric thrust ball bearing engineered for demanding applications requiring exceptional axial load handling. Its design is optimized to accommodate very high thrust loads in one direction while maintaining stable operation. Manufactured from premium 52100 Chrome Steel for both rings and balls, this bearing offers superior durability and wear resistance. Its open seal type allows for versatile lubrication options, making it a robust and reliable choice for heavy-duty industrial machinery where axial forces are predominant.
51428 M Bearing Model Code Explained, Specifications & Naming Convention
The model number 51428 M can be broken down as follows:
- 51428: The basic bearing designation, indicating a metric thrust ball bearing with a 140mm bore and specific internal geometry.
- M: This suffix typically denotes a copper-plated bearing, which offers enhanced corrosion resistance for the outer surfaces, facilitating handling and storage.
51428 M Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: The robust construction, featuring a large 112 mm width, is designed to support substantial axial dynamic load ratings of 117,000 lbf and axial static load ratings of 389,250 lbf.
- Precision & Stability: Tight dimensional tolerances on the bore, outside diameter, and width ensure precise fitment and reliable performance under heavy loads.
- Durable Cage Design: The stainless steel cage provides excellent strength and corrosion resistance, contributing to the bearing's overall longevity and limiting speed of 1,000 rpm.
- Material Integrity: The use of 52100 Chrome Steel for critical components ensures high hardness and resistance to fatigue, essential for long service life in high-stress environments.
51428 M Bearing Typical Application Areas
This bearing is ideally suited for machinery and systems that experience significant one-directional thrust loads. Common applications include:
- Heavy-Duty Industrial Gearboxes
- Vertical Pumps and Compressors
- Cranes and Hoisting Equipment
- Large Marine Propulsion Systems
- Presses and Stamping Machinery
