719/5C
Miniature Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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Materials
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719/5C Bearing Product Overview & Core Advantages
The 719/5C is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Engineered to accommodate combined loads (radial and axial) simultaneously, this compact bearing features a 15° contact angle optimized for high-speed operation. Available in both steel and ceramic ball variants with multiple cage options, it delivers superior rigidity and reliability in demanding precision machinery. Its universal matchable (SU) design allows for flexible mounting arrangements without preload adjustment.
719/5C Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719 | Super-precision angular contact bearing series |
| 5 | Bore diameter: 5 mm |
| C | 15° contact angle design |
719/5C Bearing Structural Features & Performance Benefits
High-Speed Capability: The 15° contact angle and optimized internal geometry enable exceptional rotational speeds up to 90,000 r/min with oil lubrication. Choice of nylon or phenolic cages further enhances high-speed performance.
Precision Engineering: Manufactured to ABEC P5/P4 tolerance classes (equivalent to ABEC-5/ABEC-12), ensuring minimal runout and vibration for precision applications.
Versatile Material Options: Available with steel or ceramic balls, providing flexibility for different application requirements including higher speeds and corrosion resistance.
Universal Matching: The SU designation allows bearings to be mounted in any combination without preload adjustment, simplifying installation and maintenance.
719/5C Bearing Typical Application Areas
- High-speed spindle systems for CNC machining centers
- Precision medical equipment and dental handpieces
- Aerospace instrumentation and guidance systems
- Semiconductor manufacturing equipment
- High-frequency machining spindles
- Laboratory and analytical instruments
