6903
6900 Series Thin Section Bearings
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Basic Information
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Performance
Materials
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6903 Bearing Product Overview & Core Advantages
The 6903 is a single row deep groove ball bearing designed for exceptional performance in radial load applications. Engineered with precision ABEC-1 tolerances, this metric bearing offers reliable operation and high rotational accuracy. Its compact design, with a 7 mm width, makes it an ideal solution for space-constrained assemblies requiring a robust and cost-effective bearing solution. Manufactured from high-grade chrome steel for both rings and balls, it ensures durability and a long service life under standard operating conditions.
6903 Bearing Model Code Explained, Specifications & Naming Convention
| Code | Interpretation | Technical Significance |
|---|---|---|
| 69 | Series Designation | Indicates a deep groove ball bearing with a specific cross-section and load capacity. |
| 03 | Bore Diameter Code | Signifies a 17 mm bore diameter (03 * 5 = 15mm + 2mm constant = 17mm). |
| (Open) | Seal Type | No suffix indicates an open bearing, allowing for versatile lubrication options but requiring a clean operating environment or external sealing. |
| (C0) | Internal Clearance | Standard radial internal clearance (0.003mm to 0.018mm), suitable for most general applications. |
6903 Bearing Structural Features & Performance Benefits
- Optimized Radial Load Capacity: The deep groove raceway and single-row design are engineered to efficiently support significant radial loads (Dynamic: 1033 lbf / Static: 576 lbf), making it a fundamental component for shaft support.
- High-Speed Capability: Featuring a lightweight, corrosion-resistant stainless steel cage, the bearing is capable of achieving a limiting speed of 26,000 rpm, reducing centrifugal forces and ensuring stable operation at high velocities.
- Precision Performance: Manufactured to ABEC-1 tolerance class, this bearing provides consistent running accuracy, low noise, and low vibration, which is critical for smooth and efficient machinery operation.
- Versatile Application Range: With a temperature range of -30°C to 110°C and the requirement for lubrication, it can be adapted to various operational environments with the appropriate grease or oil.
6903 Bearing Typical Application Areas
The 6903 deep groove ball bearing is widely used across numerous industries due to its versatile performance. Key applications include:
- Electric Motors and small gearboxes
- Precision Instruments and medical devices
- Office machinery such as printers and scanners
- Light-duty industrial fans and blowers
- Various automotive accessories and auxiliary drives
