RW2
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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RW2 Bearing Product Overview & Core Advantages
The RW2 is a single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. Manufactured to ABEC1 tolerance class, this inch-series bearing delivers consistent operation in demanding environments. Its primary strength lies in efficiently handling radial loads with a dynamic load rating of 121 lbf, while its compact design (0.125" bore × 0.375" OD) makes it ideal for space-constrained assemblies. Constructed entirely from chrome steel rings and balls with a stainless steel cage, it offers excellent durability and corrosion resistance.
RW2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| RW2 | Basic bearing designation with inch dimensions |
| Open | No seals or shields, allowing for custom lubrication schemes |
| Extended Inner Ring | Provides additional mounting surface and axial location |
| MC3 | Normal radial internal clearance (0.00008" to 0.0005") |
RW2 Bearing Structural Features & Performance Benefits
Optimized Load Distribution: The single row deep groove raceway geometry with 7 precision balls ensures smooth rotation and efficient radial load transfer. The stainless steel cage maintains proper ball spacing, reducing friction and wear at high speeds.
Precision Engineering: Manufactured to ABEC1 tolerance standards with tight dimensional control (bore/OD tolerance: -0.0003" to 0"), this bearing provides consistent performance in precision applications. The MC3 radial clearance offers optimal operation under normal conditions.
Extended Temperature Capability: With an operating range of -86 to 230 °F, the RW2 maintains performance across various environmental conditions. The chrome steel construction provides excellent hardness and wear resistance.
High-Speed Operation: The lightweight stainless steel cage and precision grinding enable operation at limiting speeds up to 56,000 rpm, making it suitable for high-speed applications.
RW2 Bearing Typical Application Areas
- Precision instruments and measuring devices
- Small motors and miniature gearboxes
- Medical equipment components and dental handpieces
- Office automation equipment and computer peripherals
- Robotic joints and miniature automation systems
- Aerospace components requiring inch-dimension bearings
