S71913 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71913 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S71913 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered with a 25° contact angle and P4A super-precision tolerance, this bearing delivers superior rotational accuracy and stiffness. Its ceramic ball construction enables outstanding high-speed performance while reducing weight and minimizing heat generation. The combination of sealed design and premium grease lubrication ensures long-term, maintenance-free operation in challenging environments.
Model Code Detailed Breakdown
| Code Segment | Technical Meaning |
| S71913 | Precision angular contact ball bearing series with 65mm bore, 90mm OD |
| AC | 25° contact angle design |
| EGA | Extra light preload (Class A) |
| HC | Hybrid ceramic balls |
| P4A | Super precision tolerance class |
S71913 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls provides exceptional high-speed capability with reduced centrifugal forces, enabling operation up to 31,000 rpm. The ceramic balls also offer superior electrical resistance and reduced thermal expansion.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore tolerance: -0.004mm to 0), ensuring minimal runout and vibration for ultra-precise applications.
Optimized Cage Design: The phenolic resin cage provides excellent strength-to-weight ratio, reduced friction, and superior performance at high rotational speeds.
Sealed & Lubricated: Integrated sealing with premium grease offers protection against contamination while providing reliable lubrication across the operating temperature range of -30°C to 110°C.
S71913 ACEGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Systems: Guidance systems, actuators, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- High-Speed Motors: Spindle motors, turbochargers, and specialized drive systems
