FR155
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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FR155 Bearing Product Overview & Core Advantages
The FR155 is a precision single row deep groove ball bearing designed for reliable performance in compact applications. Manufactured to ABEC1 tolerance class, this inch-series bearing delivers consistent operation and is engineered to handle primarily radial loads with high efficiency. Its compact dimensions (0.15625" bore, 0.3125" OD) make it ideal for space-constrained assemblies while maintaining robust load capacity. The bearing features an integral flange for secure mounting and axial location, enhancing installation stability.
FR155 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| FR155 | Basic bearing designation with inch dimensions |
| Open | No seals or shields, allowing for custom lubrication schemes |
| MC3 | Normal radial internal clearance group (0.00008" to 0.0005") |
| Flange | Integral mounting flange (0.359" OD) for simplified installation |
FR155 Bearing Structural Features & Performance Benefits
Optimized Load Distribution: The single row deep groove construction with 10 precision balls ensures smooth operation and efficient radial load distribution. With a dynamic load rating of 69 lbf and static rating of 27 lbf, this bearing provides reliable performance in demanding applications.
High-Speed Capability: The stainless steel cage and precision-ground chrome steel components enable operation at limiting speeds up to 53,000 rpm, making it suitable for high-speed applications.
Precision Engineering: Manufactured to ABEC1 tolerance standards with tight dimensional control (bore tolerance: -0.0003" to 0"), ensuring consistent performance and easy installation.
Material Excellence: Constructed from chrome steel rings and balls with stainless steel cage, providing excellent durability and corrosion resistance in the specified temperature range of -86 to 230 °F.
FR155 Bearing Typical Application Areas
- Small precision motors and miniature gearboxes
- Medical devices and laboratory equipment
- Office automation equipment and precision instruments
- Robotic components and miniature automation systems
- Aerospace instrumentation and control systems
- Optical devices and positioning mechanisms
