W 61902-2Z
W Series Stainless Steel Bearings
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W 61902-2Z Bearing Product Overview & Core Advantages
The W 61902-2Z is a single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads while its shielded design (2Z) provides effective protection against contaminant ingress, ensuring long service life and consistent operation. This bearing is characterized by its compact design, making it ideal for applications with space constraints where high limiting speeds and low maintenance are critical requirements.
Model Code In-Depth Analysis
| Code Segment | Technical Meaning |
|---|---|
| W 61902 | Basic bearing designation for a single row deep groove ball bearing with a 15 mm bore and 28 mm outside diameter. |
| -2Z | The bearing is fitted with shields on both sides. This provides effective protection against coarse contaminants while retaining the pre-filled grease lubrication. |
W 61902-2Z Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, providing superior corrosion resistance and suitability for harsh environments.
- Optimized Load Capacity: The deep groove raceway and precision manufacturing enable high radial dynamic load rating (834 lbf) and radial static load rating (504 lbf), ensuring reliable performance under load.
- High-Speed Capability: The bearing is designed for a high limiting speed of 28,000 rpm, facilitated by its stable stainless steel cage and optimized internal geometry.
- Maintenance-Free Operation: The combination of non-contact shields (2Z) and factory-preloaded grease lubrication creates a sealed-for-life unit, minimizing maintenance requirements and extending service intervals.
- Precision Tolerance: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance and ease of interchangeability.
W 61902-2Z Bearing Typical Application Areas
The W 61902-2Z is ideally suited for a wide range of applications where precision, corrosion resistance, and high-speed operation are paramount. Key industries and equipment include:
- Electric Motors and Small Spindles
- Medical and Dental Equipment
- Food Processing and Packaging Machinery (due to stainless steel construction and compliance with RoHS/REACH)
- Precision Instruments and Optical Devices
- Office Automation Equipment (e.g., printers, scanners)
