RW4
RW Series Extended Inner Ring Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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RW4 Bearing Product Overview & Core Advantages
The RW4 is a single row deep groove ball bearing designed for exceptional radial load capacity in compact spaces. Manufactured to ABEC1 precision standards, this inch-series bearing delivers reliable performance with a chrome steel construction for durability. Its extended inner ring facilitates easier installation and secure positioning, while the open design allows for optimal lubrication customization based on specific application requirements. This bearing is ideal for applications demanding high rotational accuracy and consistent performance under radial loads.
RW4 Bearing Model Code Explained, Specifications & Naming Convention
| Code | Technical Meaning | Significance |
|---|---|---|
| RW4 | Basic bearing designation (Inch series) | Indicates specific bearing dimensions: 0.25" bore, 0.625" OD |
| Open | No seals or shields | Allows for custom lubrication and high-speed operation |
| Extended Inner Ring | Inner ring protrudes beyond bearing width | Simplifies mounting and provides positive location |
RW4 Bearing Structural Features & Performance Benefits
Optimized Load Distribution: The deep groove raceway and eight precision balls enable efficient handling of radial dynamic loads up to 283 lbf, making it suitable for moderate to high-load applications.
High-Speed Capability: With a limiting speed of 38,000 rpm and stainless steel cage, this bearing maintains stability and reduces friction at high rotational velocities.
Precision Engineering: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3 grade), ensuring consistent performance and minimal vibration.
Durable Construction: Chrome steel rings and balls provide excellent wear resistance and fatigue life, while the stainless steel cage offers corrosion resistance.
RW4 Bearing Typical Application Areas
- Small electric motors and precision instruments
- Medical equipment and dental handpieces
- Office automation devices (printers, scanners)
- Textile machinery spindles and guides
- Robotic joints and precision positioning systems
