R1-5
R Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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R1-5 Bearing Product Overview & Core Advantages
The R1-5 is a precision single row deep groove ball bearing designed for reliable performance in compact applications. Manufactured to ABEC1 tolerance class, this bearing delivers consistent operation while handling radial loads up to 106 lbf dynamic capacity. Its inch-sized dimensions (0.09375" bore × 0.3125" OD) make it ideal for space-constrained assemblies requiring high rotational accuracy and smooth operation across a wide temperature range from -86 to 230 °F.
Model Code Technical Breakdown
| Code Element | Technical Meaning |
|---|---|
| R1-5 | Standard inch series designation |
| Open | No seals/shields - requires external lubrication |
| MC3 | Normal radial internal clearance group |
R1-5 Bearing Structural Features & Performance Benefits
Optimized Ball Configuration: Features six precision chrome steel balls with 0.06252" diameter, ensuring smooth rotation and reduced vibration during operation.
Enhanced Material Construction: Chrome steel rings combined with stainless steel cage provide excellent corrosion resistance and dimensional stability.
Precision Engineering: Maintains tight dimensional tolerances (bore/OD: -0.0003" to 0") and controlled radial clearance (0.00008" to 0.0005") for consistent performance.
High-Speed Capability: With a limiting speed of 60,000 rpm, this bearing is suitable for high-rotation applications while maintaining ABEC1 precision standards.
R1-5 Bearing Typical Application Areas
- Precision instruments and measuring devices
- Small electric motors and miniature gearboxes
- Medical equipment and dental handpieces
- Optical positioning systems and scanners
- Laboratory equipment and analytical instruments
- Robotic joints and miniature automation components
