FR188
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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FR188 Bearing Product Overview & Core Advantages
The FR188 is a single row deep groove ball bearing designed for high-performance radial load applications. Manufactured to ABEC1 precision class, this inch-series bearing delivers reliable operation in compact spaces with its 0.25" bore and 0.5" outside diameter. Its open construction allows for optimal lubrication flexibility, while the chrome steel components and stainless steel cage ensure durability and corrosion resistance. The FR188 is engineered to handle demanding applications requiring consistent performance under radial loads up to 344 lbf dynamic capacity.
FR188 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| FR188 | Basic bearing designation with inch dimensions |
| Open | No seals or shields - allows for custom lubrication |
| ABEC1 | Precision tolerance class for reliable performance |
| MC3 | Radial internal clearance group (0.00008" to 0.0005") |
FR188 Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables efficient radial load distribution across all eight precision balls, maximizing bearing life and load capacity.
Precision Components: Manufactured from chrome steel rings and balls with stainless steel cage, the FR188 delivers excellent wear resistance and dimensional stability across its operating temperature range of -86 to 230 °F.
High-Speed Capability: With a limiting speed of 40,000 rpm and optimized cage design, this bearing maintains stable operation in high-velocity applications.
Flexible Lubrication: The open design allows for application-specific lubrication selection, enabling optimal performance across diverse operating conditions.
FR188 Bearing Typical Application Areas
- Small precision motors and miniature drive systems
- Medical equipment and dental handpieces
- Optical instruments and precision positioning systems
- Robotics and automation components
- Office equipment and small power tools
- Aerospace instrumentation and control systems
