71815 ACD/HCP4
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71815 ACD/HCP4 Bearing Product Overview & Core Advantages
The 71815 ACD/HCP4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. Its design is optimized to support combined loads (radial and axial) simultaneously, with a 25° contact angle providing superior axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers ultra-precise running accuracy. The use of a phenolic cage and ceramic balls enables outstanding high-speed performance, reaching limiting speeds of 22,000 rpm, while the available preload ensures high system rigidity and minimal deflection under load.
71815 ACD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation indicating metric dimensions: 75mm bore, 95mm OD, 10mm width |
| ACD | Angular Contact Design with 25° contact angle, optimized for high-speed operation |
| HCP4 | Hybrid Ceramic Precision: Ceramic balls with P4 tolerance class for superior precision and performance |
71815 ACD/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with silicon nitride ceramic balls provides significant advantages including reduced friction, lower operating temperatures, extended service life, and compatibility with higher speeds compared to all-steel bearings.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high rotational speeds, contributing to the bearing's impressive 22,000 rpm limiting speed.
Precision Engineering: Manufactured to P4 (ABEC-7) tolerance class with tight dimensional tolerances on bore, outside diameter, and width, ensuring precise fitment and minimal runout in demanding applications.
Optimized Load Capacity: The 25° contact angle provides balanced performance for both radial and axial loads, with dynamic and static load ratings of 2992 lbf and 3600 lbf respectively.
Preload Availability: Available with preload for applications requiring high rigidity and precise shaft positioning, minimizing deflection under operational loads.
71815 ACD/HCP4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Motors: Electric spindle motors, high-frequency motors, and precision servo drives
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: Dental handpieces, surgical tools, and laboratory centrifuges
- Robotics: Precision joints, rotary actuators, and automated assembly systems
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
