F691xzz
F 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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F691xzz Bearing Product Overview & Core Advantages
The F691xzz is a miniature single row deep groove ball bearing designed for applications requiring exceptional precision and reliability in compact spaces. Engineered with shielded construction, it provides effective protection against contamination while maintaining low friction. This bearing is optimized to handle primarily radial loads and is characterized by its ABEC1 precision class, ensuring smooth operation and high rotational accuracy. Its extremely small dimensions, with a 1.5 mm bore and 5 mm outside diameter, make it an ideal solution for miniature and micro-mechanical systems demanding high performance in a minimal footprint.
F691xzz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| F691 | Indicates the bearing series, specifying the core dimensions (1.5mm bore, 5mm OD). |
| ZZ | Signifies that the bearing is equipped with non-contact shields on both sides. This provides excellent protection against dust and other particulates without significantly increasing rotational torque. |
F691xzz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a width of only 2.6 mm and a weight of 0.33 g, this bearing is engineered for space-constrained and weight-sensitive applications.
- Effective Contamination Protection: The stainless steel shields (ZZ) help retain lubrication and exclude contaminants, enhancing bearing service life and reliability.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), it ensures smooth, quiet, and vibration-free operation.
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and optimized internal geometry contributes to a high limiting speed of 85,000 rpm.
- Robust Load Capacity: Constructed from chrome steel for both rings and balls, it offers a reliable dynamic load rating of 32 lbf and static load rating of 9 lbf for its size.
F691xzz Bearing Typical Application Areas
- Small Precision Motors (e.g., drone motors, miniature DC motors)
- Medical and Dental Handpieces
- Optical Encoders and Precision Instruments
- Small Fans and Blowers
- Office Automation Equipment (e.g., printers, scanners)
- Various micro-mechanical devices and miniature robotic joints.
