51203
51200 Series Single Direction Thrust Ball Bearings
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Part No.
Part No.
51203
Basic Information
Bearing type
Ball
System of measurement
Metric
Weight
0.053 kg
Seal type
Open
For load direction
Thrust
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.012mm to 0
Width
12 mm
Width tolerance
+0.02mm to -0.25mm
Chamfer dimension
0.6 mm
Ball & Washer Dimensions
Housing washer inner diameter
19 mm
Shaft washer outer diameter
35 mm
Performance
Temperature range
-30° to 110 °C
Axial dynamic load rating
3668 lbf
Axial static load rating
6075 lbf
Limiting speed
9.5 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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51203 Bearing Product Overview & Core Advantages
The 51203 metric thrust ball bearing is engineered for applications requiring high-precision axial load handling in a compact design. This thrust bearing excels in providing reliable, unidirectional axial support with its open seal type, facilitating high-speed operation up to 9,500 rpm. Manufactured from 52100 Chrome Steel for both rings and balls, it ensures durability and consistent performance under significant axial dynamic load ratings of 3668 lbf. Its compliance with ROHS and REACH standards makes it suitable for modern, regulated industrial environments demanding precision and reliability.
51203 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 51 | Indicates a thrust ball bearing series. |
| 2 | Specifies the dimensional series; relates to cross-section and load capacity. |
| 03 | Denotes the bore diameter code (17 mm bore). |
| Open Seal | No contact seals, allowing for higher limiting speeds and reduced friction, ideal for applications where heat generation must be minimized. |
51203 Bearing Structural Features & Performance Benefits
- High Axial Load Capacity: Designed specifically for thrust loads, this bearing supports an axial dynamic load rating of 3668 lbf and a static load rating of 6075 lbf, providing robust performance in demanding applications.
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 9,500 rpm, suitable for rapid operation without compromising integrity.
- Precision Tolerances: With tight dimensional tolerances on the bore diameter and outside diameter, this bearing ensures precise fit and alignment, critical for high-accuracy machinery.
- Durable Material Construction: Components made from 52100 Chrome Steel and a stainless steel cage offer excellent wear resistance and corrosion protection, extending service life.
51203 Bearing Typical Application Areas
- Automotive Systems: Used in clutches, gearboxes, and steering mechanisms for precise axial load management.
- Industrial Machinery: Ideal for machine tools, pumps, and compressors where high-speed thrust support is required.
- Aerospace Components: Employed in control systems and actuators due to its reliability and compliance with environmental standards.
- Precision Instruments: Suitable for medical devices and optical equipment needing compact, high-load axial bearings.
