FR2-5zz
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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FR2-5zz Bearing Product Overview & Core Advantages
The FR2-5zz is a precision miniature ball bearing designed for demanding applications requiring compact size and reliable performance. This single row, shielded bearing is engineered to handle primarily radial loads with high efficiency. Manufactured to ABEC1 tolerance standards, it offers excellent rotational accuracy and smooth operation. Its inch-series dimensions make it ideal for replacement in American-designed equipment and precision instruments where space is at a premium.
FR2-5zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| FR2-5 | Bearing series and size designation | Indicates a specific inch-series bearing with a 1/8" bore and 5/16" outer diameter |
| zz | Double shielded (both sides) | Provides contamination protection from dust and debris, extending bearing life |
FR2-5zz Bearing Structural Features & Performance Benefits
Optimized Load Capacity: With a radial dynamic load rating of 107 lbf and static rating of 32 lbf, this bearing delivers reliable performance in compact spaces. The six chrome steel balls precisely sized at 0.06252" ensure smooth load distribution.
Shielded Protection: The 300 series stainless steel shields on both sides effectively retain lubrication and exclude contaminants, making the bearing suitable for environments where maintenance access is limited.
Precision Engineering: Manufactured to ABEC1 tolerance class with MC3 radial internal clearance (0.00008" to 0.0005"), this bearing ensures consistent performance and minimal vibration.
Material Excellence: Constructed from chrome steel rings and stainless steel cage, the bearing offers excellent durability and corrosion resistance within its operating temperature range of -86 to 230 °F.
FR2-5zz Bearing Typical Application Areas
The FR2-5zz finds extensive use in:
- Small electric motors and precision gearboxes
- Medical devices and dental handpieces
- Office automation equipment including printers and scanners
- Robotics and small automation mechanisms
- Instrumentation and measurement devices
- RC models and hobbyist applications
