W 61903
W Series Stainless Steel Bearings
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W 61903 Bearing Product Overview & Core Advantages
The W 61903 is a metric single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered with stainless steel rings, balls, and cage, it offers excellent corrosion resistance and durability. Its key advantage lies in its ability to efficiently handle radial loads while maintaining a compact cross-section, making it an ideal choice for applications requiring high reliability, smooth operation, and a long service life within its specified temperature range.
W 61903 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Manufacturer's series prefix |
| 61903 | Standard bearing designation for a deep groove ball bearing with a 17mm bore, 30mm OD, and 7mm width. |
| Open (Seal Type) | No seals or shields, allowing for higher speeds and easier re-lubrication, but requiring a clean operating environment. |
| P0 (Tolerance Class) | Standard dimensional and geometrical tolerance per ISO standards. |
| CN (Radial Clearance) | Normal radial internal clearance group. |
W 61903 Bearing Structural Features & Performance Benefits
Optimized for Radial Loads: The single row deep groove raceway geometry is precision-engineered to carry significant radial dynamic load ratings (892 lbf), ensuring stable operation and extended bearing life.
High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 32,000 rpm, making it suitable for high-velocity spindles and rotors.
Corrosion Resistance & Clean Operation: Constructed entirely from stainless steel, this bearing is resistant to rust and corrosion, ideal for applications exposed to moisture, chemicals, or requiring washdown. Its clean, lubrication-free construction is perfect for sensitive environments.
Precision Dimensions: Manufactured to P0 tolerance class with controlled bore, outside diameter, and width tolerances, ensuring precise fit and reliable performance in assemblies.
W 61903 Bearing Typical Application Areas
The W 61903 is widely used in applications demanding corrosion resistance, high speeds, and reliable performance under radial loads. Key industries and equipment include:
- Medical and Dental Equipment: High-speed handpieces, pumps, and small motors.
- Food and Beverage Processing: Conveyor rollers, mixers, and filling machines where washdown and corrosion resistance are critical.
- Precision Instruments and Optical Devices: Scanners, encoders, and measuring instruments.
- Small Electric Motors and Gearboxes: Providing smooth, low-friction support for motor shafts.
- Office Automation Equipment: Printers, scanners, and copiers.
