719/8 ACE/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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719/8 ACE/P4A Bearing Product Overview & Core Advantages
The 719/8 ACE/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and excellent high-speed performance. Engineered to P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant axial loads in one direction while supporting radial loads, making it ideal for precision spindles and high-rotation machinery. Its compact design, featuring a 6 mm width and 8 mm bore, allows for space-saving integration in demanding applications.
719/8 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Standard metric series designation with 8mm bore diameter |
| ACE | Angular contact design with 25° contact angle for optimal axial load capacity |
| P4A | P4 (ABEC-7) precision class with specific tolerance enhancements for high-accuracy applications |
719/8 ACE/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable exceptional performance at limiting speeds up to 165,000 rpm, reducing centrifugal forces and maintaining stability.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional control (bore tolerance: -0.004mm to 0), ensuring consistent performance in high-precision applications.
Superior Load Capacity: The 25° contact angle and 9 high-quality chrome steel balls provide excellent axial load capacity while maintaining radial load capability, with a dynamic load rating of 378 lbf.
Thermal Stability: The phenolic cage material offers excellent dimensional stability across the operating temperature range of -30°C to 110°C.
719/8 ACE/P4A Bearing Typical Application Areas
- High-speed machine tool spindles and precision grinding applications
- Dental handpieces and medical equipment requiring high rotational accuracy
- Precision instruments and laboratory equipment
- Small high-speed motors and turbo-molecular pumps
- Robotic joints and automation equipment requiring compact, high-performance bearings
