W 633-2Z
W Series Stainless Steel Miniature Bearings
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W 633-2Z Bearing Product Overview & Core Advantages
The W 633-2Z is a metric single row deep groove ball bearing designed for high performance in compact spaces. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its shielded (2Z) design, which provides effective protection against contamination while being pre-lubricated with grease for long-term, maintenance-free operation. This bearing is engineered to handle primarily radial loads and is characterized by its high limiting speed and reliable performance across a wide temperature range, making it a robust choice for precision applications demanding durability and cleanliness.
W 633-2Z Bearing Model Code Explained, Specifications & Naming Convention
| W 633 | Basic bearing series designation, indicating a deep groove ball bearing with a 3mm bore, 13mm OD, and 5mm width. |
| -2Z | Signifies that the bearing is equipped with non-contact shields on both sides. This provides protection against large solid contaminants while minimizing friction, contributing to the high limiting speed. |
W 633-2Z Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and cage are made of stainless steel, providing superior corrosion resistance and making the bearing suitable for applications where moisture or aggressive media are present.
- Shielded Design (2Z): The non-contact steel shields effectively retain the factory-applied grease lubrication and exclude larger contaminants, enabling reliable, long-life operation without the need for re-lubrication.
- High-Speed Capability: The combination of the deep groove raceway, precision-ground components, and low-friction shields allows this bearing to achieve a high limiting speed of 56,000 rpm, suitable for demanding high-velocity applications.
- Radial Load Capacity: Engineered to efficiently support radial dynamic loads up to 167 lbf, ensuring stable performance under operational stresses.
W 633-2Z Bearing Typical Application Areas
- Small Precision Motors and spindles
- Medical and Dental Handpieces
- Optical Encoders and precision instrumentation
- Office Automation Equipment (e.g., printers, scanners)
- Radio Control Models and miniature gearboxes
