6203/C5
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
6203/C5
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
65 g
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
40 mm
Outside diameter tolerance
-0.011mm to 0
Width
12 mm
Width tolerance
-0.120mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
2147 lbf
Radial static load rating
1079 lbf
Limiting speed
17 X 1000 rpm
Lubrication
None
Radial internal clearance
C5
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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6203/C5 Bearing Product Overview & Core Advantages
The 6203/C5 is a single row deep groove ball bearing designed for exceptional performance in demanding applications. This metric bearing features an open design and is manufactured to ABEC 1 | ISO P0 tolerance class, ensuring reliable and consistent operation. Its key advantage lies in its specified C5 radial internal clearance, which is wider than standard, making it ideally suited for applications involving thermal expansion, high-speed operation, or where interference fits are used. This combination of precision, robust chrome steel construction, and optimized clearance delivers high reliability and long service life under radial loads.
6203/C5 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 6203 | Standard designation for a single row deep groove ball bearing with a 17mm bore, 40mm OD, and 12mm width. |
| /C5 | Indicates a greater radial internal clearance than normal (CN). This is critical for accommodating thermal expansion in shafts or housings and is often specified for high-speed applications. |
| Open (Seal Type) | The bearing is supplied without seals or shields, allowing for higher limiting speeds and facilitating custom re-lubrication if required. |
6203/C5 Bearing Structural Features & Performance Benefits
- Optimized Internal Clearance (C5): The C5 clearance is a defining feature. It prevents excessive preload and potential overheating in applications with high rotational speeds or where thermal gradients are present, thereby enhancing operational reliability.
- High-Speed Capability: The open construction and precision-grade manufacturing minimize friction and heat generation, supporting a high limiting speed of 17,000 rpm. The robust chrome steel cage ensures stability at these velocities.
- Robust Load Capacity: The deep groove raceway and high-quality chrome steel construction provide excellent radial dynamic and static load ratings (2147 lbf and 1079 lbf, respectively), making it capable of handling significant radial forces.
- Versatile Material Compatibility: Constructed entirely from chrome steel (rings, balls, and cage), this bearing offers high hardness, wear resistance, and a broad operating temperature range from -30°C to 120°C.
6203/C5 Bearing Typical Application Areas
This bearing is engineered for a wide range of industrial machinery and equipment, including:
- Electric Motors and Small Gearboxes
- Pumps and Fans
- Material Handling Conveyors
- Agricultural Machinery
- Automotive Components (e.g., alternators, idler pulleys)
