W 639-2RS1
W Series Stainless Steel Miniature Bearings
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W 639-2RS1 Bearing Product Overview & Core Advantages
The W 639-2RS1 is a sealed single row deep groove ball bearing designed for reliable performance in demanding applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its primary advantage lies in its ability to accommodate radial loads and moderate axial loads in both directions simultaneously. The integrated rubber seals (2RS1) effectively retain lubricant and exclude contaminants, making it a robust, low-maintenance solution for applications requiring high reliability and long service life.
Model Code Breakdown
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| W | Bearing Series | Indicates a specific design series of miniature deep groove ball bearings. |
| 639 | Size Code | Defines the bearing dimensions: 9 mm bore, 30 mm OD, 10 mm width. |
| 2RS1 | Seal Type | Signifies contact rubber seals on both sides, offering superior protection against contamination and grease leakage. |
W 639-2RS1 Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and cage are made of stainless steel, providing excellent resistance to rust and corrosion, ideal for harsh environments or washdown applications.
- Deep Groove Raceway: The deep, continuous raceways on both rings are optimized for handling radial loads and bidirectional axial loads, ensuring stable operation.
- Effective Sealing (2RS1): The rubber contact seals provide a high degree of protection against dust, moisture, and other contaminants, while effectively retaining the pre-applied grease lubrication. This contributes to the bearing's maintenance-free characteristic.
- Precision & Reliability: Manufactured to P0 tolerance class and standard CN radial internal clearance, this bearing ensures consistent performance, smooth running, and low noise levels.
W 639-2RS1 Bearing Typical Application Areas
The W 639-2RS1 is suited for a wide range of applications where compact size, corrosion resistance, and sealed-for-life operation are critical. Common uses include:
- Precision Instruments and measuring devices
- Small Electric Motors and gearboxes
- Medical and Dental Equipment
- Food and Beverage Processing Machinery
- Office Automation Equipment (e.g., printers, scanners)
- Various machinery requiring small, sealed bearings with a 9 mm bore
