FR144
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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FR144 Bearing Product Overview & Core Advantages
The FR144 is a precision miniature ball bearing engineered for demanding applications requiring compact size and reliable performance. As a single row deep groove ball bearing, it is optimized for radial load applications while also capable of handling moderate axial loads. Its inch-series dimensions, high-grade components, and ABEC1 precision make it an ideal solution for high-speed, compact assemblies where space is at a premium and consistent operation is critical.
FR144 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| FR144 | Standard Bearing Designation | Indicates the specific bearing size and series (0.125" bore, 0.25" OD). |
| Open (Seal Type) | No Shield or Seal | Allows for higher limiting speeds and custom lubrication, but requires a clean operating environment. |
| ABEC1 | Tolerance Class | Specifies standard precision for runout and dimensional tolerances, ensuring smooth, reliable operation. |
| MC3 | Radial Internal Clearance | Defines a normal clearance range (0.00008" to 0.0005"), suitable for a wide range of operating conditions. |
FR144 Bearing Structural Features & Performance Benefits
High-Speed Capability: The open design and stainless steel cage minimize friction and drag, enabling a high limiting speed of 67,000 rpm. This makes the FR144 an excellent choice for high-speed spindles and miniature motors.
Robust Load Capacity: Manufactured from chrome steel rings and balls, this bearing offers a dynamic load rating of 54 lbf and a static load rating of 17 lbf, providing dependable performance under significant radial loads.
Precision Engineering: The ABEC1 tolerance class and controlled radial internal clearance ensure minimal vibration and consistent running accuracy, which is vital for precision instruments.
Wide Temperature Range: With an operating temperature range from -86 to 230 °F, this bearing is suitable for use in various challenging environments.
FR144 Bearing Typical Application Areas
The FR144 miniature ball bearing is extensively used in:
- Small Precision Motors and Spindles
- Medical and Dental Handpieces
- Optical Encoders and Scanning Devices
- Instrumentation and Laboratory Equipment
- Small Gearboxes and High-Speed Mechanisms
