71910 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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71910 ACD/HCP4A Bearing Product Overview & Core Advantages
The 71910 ACD/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. Designed to accommodate combined loads (radial and axial) in one direction, this bearing features a 25° contact angle for optimal axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy and dimensional stability. The combination of ceramic balls and phenolic cage enables outstanding high-speed performance up to 30,000 rpm, while the available preload ensures high system rigidity and precise shaft positioning.
71910 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 71910 | Basic bearing designation (50mm bore, 72mm OD, 12mm width) | Standardized bearing dimensions for easy integration |
| ACD | Angular Contact Design with 25° contact angle | Optimized for combined radial and axial loads |
| HC | Hybrid Ceramic (steel rings with ceramic balls) | Enhanced high-speed capability and reduced friction |
| P4 | Precision tolerance class (ABEC-7 equivalent) | Superior running accuracy for precision applications |
71910 ACD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with silicon nitride ceramic balls significantly reduces centrifugal forces, enabling higher operating speeds while providing electrical insulation properties and superior corrosion resistance.
Phenolic Resin Cage: The lightweight phenolic cage offers excellent dimensional stability at high speeds and temperatures, contributing to the bearing's exceptional limiting speed of 30,000 rpm.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional tolerances (bore: -0.006mm to 0, OD: -0.007mm to 0), ensuring minimal runout and vibration for high-precision applications.
Optimized Load Capacity: With a radial dynamic load rating of 2858 lbf and static load rating of 2205 lbf, this bearing delivers reliable performance under significant combined loads.
71910 ACD/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and grinding spindles requiring precision and thermal stability
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Precision Instrumentation: Medical equipment, measuring devices, and optical systems
- Aerospace Systems: Guidance systems, actuators, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
