71802 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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71802 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71802 CDGA/HCP4 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered with a 15° contact angle and manufactured to ABEC 7 / P4 tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its ceramic ball construction enables operation at high speeds (up to 95,000 rpm) while providing excellent rigidity and the capability to handle combined loads. The phenolic cage and universal matching designation make it ideal for precision spindle arrangements requiring minimal thermal expansion and optimal performance.
71802 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71802 | Basic bearing series with 15mm bore, 24mm OD, 5mm width |
| CD | 15° contact angle design |
| GA | Light preload classification |
| HC | Hybrid ceramic construction (steel rings with ceramic balls) |
| P4 | ABEC 7 / ISO P4 precision tolerance class |
71802 CDGA/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings with silicon nitride ceramic balls provides superior high-speed performance, reduced friction, and extended service life compared to all-steel bearings.
Precision Engineering: Manufactured to P4 tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional running accuracy and minimal vibration.
Optimized Cage Design: The phenolic resin cage offers excellent dimensional stability, low friction, and superior performance at high rotational speeds while being lightweight.
Universal Matching Capability: Designated as Universal Matchable (SU), these bearings can be paired in sets of two for precise preload control in spindle applications.
High-Speed Performance: With a limiting speed of 95,000 rpm and 17 ceramic balls, this bearing delivers exceptional rotational accuracy and thermal stability under demanding conditions.
71802 CDGA/HCP4 Bearing Typical Application Areas
- High-speed machining centers and CNC spindle systems
- Precision grinding spindles requiring minimal runout
- Dental and medical equipment motors and handpieces
- Aerospace instrumentation and guidance systems
- Semiconductor manufacturing equipment
- High-frequency spindle applications in PCB drilling and routing
