W 638/4 R-2RS1
W Series Stainless Steel Flanged Miniature Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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W 638/4 R-2RS1 Bearing Product Overview & Core Advantages
The W 638/4 R-2RS1 is a miniature deep groove ball bearing designed for compact applications requiring high reliability and precision. This sealed single row bearing excels in handling radial loads and offers exceptional performance in limited spaces. Its stainless steel construction provides excellent corrosion resistance, making it suitable for demanding environments. The bearing is pre-lubricated with grease, ensuring smooth operation and contributing to its maintenance-free characteristics, which is a significant advantage for applications where re-lubrication is impractical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W 638/4 | Basic bearing designation, indicating a metric, stainless steel deep groove ball bearing series with a 4 mm bore. |
| R | Flanged outer ring design, providing axial location and simplifying mounting. |
| 2RS1 | Contact seals on both sides. The RS1 seal type offers effective protection against contaminants while maintaining low friction. |
W 638/4 R-2RS1 Bearing Structural Features & Performance Benefits
- Compact & Robust Design: The single-row deep groove raceway and stainless steel construction provide a robust solution for miniature bearing applications, offering a long service life even in corrosive environments.
- Effective Sealing: The 2RS1 double-contact seals effectively retain lubricant and exclude dust, moisture, and other contaminants, enhancing bearing reliability and enabling maintenance-free operation.
- Flanged Outer Ring: The integral flange (R) simplifies axial positioning during assembly, reduces the need for complex housing designs, and improves overall mounting rigidity.
- Pre-Lubricated & Ready-to-Use: Filled with a standard grease, the bearing is optimized for its specified temperature range (-30° to 120 °C) and is immediately ready for installation, reducing assembly time.
W 638/4 R-2RS1 Bearing Typical Application Areas
This miniature flanged bearing is ideal for applications with strict space constraints and requirements for corrosion resistance. Common uses include:
- Small Electric Motors: Used in miniature DC motors, stepper motors, and fans.
- Precision Instruments: Ideal for optical encoders, medical devices, and laboratory equipment.
- Office Automation: Found in printers, scanners, and copiers.
- Robotics and RC Models: Suitable for small joints, gears, and drive systems.
