R1
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
R1 Bearing Product Overview & Core Advantages
The R1 series represents a precision miniature ball bearing designed for demanding applications requiring compact size and reliable performance. This single row deep groove ball bearing is engineered to primarily handle radial loads efficiently. Constructed from high-grade chrome steel and featuring a stainless steel cage, it offers excellent durability and smooth operation. Its compact dimensions, with a bore of 0.05556" and an outside diameter of 0.1875", make it an ideal solution for space-constrained assemblies. Compliant with ABEC1 precision standards, this bearing is a cornerstone component for high-reliability miniature mechanical systems.
R1 Bearing Model Code Explained, Specifications & Naming Convention
| Feature | Code/Value | Technical Significance |
|---|---|---|
| Bearing Series | R1 | Denotes a specific series of miniature inch-size ball bearings. |
| Seal Type | Open | No integral seals; requires external sealing for contaminated environments. |
| Tolerance Class | ABEC1 | Defines standard precision levels for runout and dimensional accuracy. |
| Internal Clearance | MC3 | Specifies a radial internal clearance group suitable for a wide range of general applications. |
R1 Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The deep groove raceway and six precision balls enable efficient handling of the specified radial dynamic load rating of 44 lbf, making it suitable for sustained operational stresses.
- High-Speed Capability: With a limiting speed of 90,000 rpm, the bearing is designed for high-velocity applications. The stainless steel cage ensures stability and reduces friction at these elevated speeds.
- Precision Engineering: Manufactured to ABEC1 standards with tight dimensional tolerances, this bearing provides consistent performance, low noise, and minimal vibration, which is critical for sensitive instrumentation.
- Material Integrity: The use of chrome steel for rings and balls, combined with a corrosion-resistant stainless steel cage, provides excellent wear resistance and long service life.
- Wide Operating Range: A temperature range from -86 to 230 °F allows for reliable performance in various environmental conditions.
R1 Bearing Typical Application Areas
- Small DC Motors and Gearboxes
- Precision Medical and Dental Handpieces
- Optical Encoders and Scanning Devices
- Small Fans and Blowers
- Instrumentation and Control Systems
- Robotic Actuators and Drones
