71915 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71915 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71915 ACD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a P4A tolerance class and ceramic balls, enabling superior high-speed capabilities with a limiting speed of 22,000 rpm. Its 25° contact angle and extra light preload (Class A) provide optimal rigidity and minimize friction, making it ideal for combination load scenarios where both radial and axial forces are present. The open design with specialized lubrication ensures reliable operation within a temperature range of -30°C to 110°C.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71915 | Basic bearing designation with 75mm bore diameter | Standardized sizing for compatibility |
| ACD | 25° contact angle, universal matchable design | Optimized for combination loads and flexible mounting arrangements |
| HC | Hybrid ceramic balls | Enhanced high-speed performance and reduced thermal expansion |
| P4A | High precision tolerance class | Exceptional running accuracy and dimensional stability |
| DGA | Preloaded pair, universal mounting | Ready-to-install matched set for immediate high-performance operation |
71915 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher operating speeds while maintaining dimensional stability under thermal variations.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration for sensitive applications.
Optimized Load Capacity: The 25° contact angle and 26 ceramic balls provide excellent combination load handling with dynamic load rating of 12,442 lbf and static load rating of 15,975 lbf.
High-Speed Performance: The phenolic cage material and hybrid construction contribute to the impressive 22,000 rpm limiting speed, making it suitable for ultra-high-speed applications.
Thermal Management: Operating temperature range of -30°C to 110°C with specialized lubrication ensures consistent performance across varying environmental conditions.
71915 ACD/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Aerospace Systems: Jet engine components and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical tools
- Robotics: Precision robotic joints and automation systems
- Semiconductor Manufacturing: Wafer handling equipment and precision positioning stages
- High-Speed Motors: Electric vehicle drivetrains and industrial servo motors
