FR2-6
FR Series Flanged Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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FR2-6 Bearing Product Overview & Core Advantages
The FR2-6 is a single row deep groove ball bearing designed for precision radial load applications. Manufactured to ABEC1 precision class standards, this inch-series bearing delivers reliable performance in compact spaces with its 0.125" bore diameter and 0.375" outside diameter. The bearing features chrome steel rings and balls with a stainless steel cage, providing excellent durability and corrosion resistance. With a radial dynamic load rating of 122 lbf and capability to operate at speeds up to 53,000 rpm, the FR2-6 offers optimal performance for demanding applications requiring high precision and reliability.
Model Code Detailed Breakdown
| Code Segment | Technical Meaning |
| FR2-6 | Basic bearing designation with inch dimensions (0.125" bore × 0.375" OD) |
| Open | No seals or shields, allowing for maximum speed capability and easy relubrication |
| ABEC1 | Precision tolerance class ensuring consistent performance and dimensional accuracy |
| MC3 | Radial internal clearance group (0.00008" to 0.0005") optimized for general operating conditions |
FR2-6 Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables efficient handling of radial loads while accommodating moderate axial loads in both directions, making it versatile for various mounting configurations.
Precision Construction: Built to ABEC1 tolerance standards with tight dimensional control (bore tolerance: -0.0003" to 0"), ensuring smooth operation and reduced vibration in precision applications.
High-Speed Capability: The stainless steel cage and optimized internal geometry allow operation at limiting speeds of 53,000 rpm, making it suitable for high-speed applications.
Material Excellence: Chrome steel rings and balls provide superior wear resistance and fatigue life, while the stainless steel cage offers excellent corrosion resistance and dimensional stability.
FR2-6 Bearing Typical Application Areas
- Small precision motors and miniature DC motors requiring high-speed operation
- Medical devices and dental handpieces where compact size and reliability are critical
- Optical encoders and precision measurement instruments demanding minimal runout
- Office automation equipment including printers, scanners, and copiers
- Robotics and automation components requiring precise motion control
- Aerospace instrumentation and guidance systems needing reliable performance
