51204
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51204
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
0.083 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
40 mm
Outside diameter tolerance
-0.012mm to 0
Width
14 mm
Width tolerance
+0.02mm to -0.25mm
Chamfer dimension
0.6 mm
Ball & Washer Dimensions
Housing washer inner diameter
22 mm
Shaft washer outer diameter
40 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
4770 lbf
Axial static load rating
8438 lbf
Limiting speed
8 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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51204 Bearing Product Overview & Core Advantages
The 51204 metric thrust ball bearing is engineered for high-precision axial load applications. Designed exclusively to handle thrust loads in a single direction, this bearing features an open design for optimal lubrication access and heat dissipation. Manufactured from 52100 Chrome Steel for both rings and balls, it delivers exceptional durability and wear resistance. Its compact design and precise dimensional tolerances make it an ideal solution for assemblies requiring high axial rigidity and reliable performance in demanding operational environments.
51204 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51 | Indicates a thrust ball bearing series. |
| 2 | Refers to the dimensional series (width and outside diameter). |
| 04 | Specifies a 20 mm bore diameter (04 x 5 = 20 mm). |
| Open (Seal Type) | No seals or shields, allowing for direct lubrication and high-speed capability. |
51204 Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: The bearing's design is optimized to support substantial thrust loads, with a dynamic load rating of 4770 lbf and a static load rating of 8438 lbf.
- Precision & Rigidity: Manufactured with tight dimensional tolerances on the bore, outside diameter, and width, ensuring precise fit and high axial rigidity in the assembly.
- High-Speed Performance: The open design and stainless steel cage contribute to a high limiting speed of 8,000 rpm, making it suitable for rapid rotation applications.
- Durability & Corrosion Resistance: Components made from 52100 Chrome Steel and a stainless steel cage offer excellent resistance to wear and corrosion, extending service life.
- Wide Temperature Range: Operates effectively within a temperature range of -30°C to 110°C, accommodating various industrial environments.
51204 Bearing Typical Application Areas
- Automotive Systems: Thrust applications in transmissions and steering mechanisms.
- Industrial Machinery: Used in machine tool tables, indexing heads, and other equipment requiring precise axial positioning.
- Pumps and Compressors: Supports axial loads in centrifugal pumps and compressor assemblies.
- Material Handling Equipment: Applicable in conveyor systems and lifting devices where axial loads are predominant.
