71906 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71906 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The 71906 CE/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing features a 15° contact angle and is supplied as a pre-determined pair (SU arrangement), enabling it to accommodate combined radial and axial loads simultaneously. Manufactured to P4A tolerance class with ceramic balls and a phenolic cage, it delivers superior high-speed capability, minimal heat generation, and outstanding operational precision for critical machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD, 18mm width) |
| CE | Contact angle of 15° |
| HC | Hybrid Ceramic (steel rings with ceramic balls) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGA | Universal Matchable bearing pair with Extra light preload (Class A) |
71906 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear, enabling higher operating speeds and extended service life compared to all-steel bearings.
Precision Phenolic Cage: The lightweight phenolic resin cage provides excellent dimensional stability at high speeds, contributing to the bearing's limiting speed of 100,500 rpm and smooth operation under rapid acceleration.
Universal Matching Design (SU): As a universal matchable bearing supplied in a pre-set pair, it simplifies installation and ensures optimal preload configuration for applications requiring high rigidity and precise axial positioning.
Extra Light Preload (Class A): This preload classification minimizes friction while maintaining sufficient stiffness, making it ideal for high-speed applications where thermal expansion must be carefully managed.
71906 CE/HCP4ADGA Bearing Typical Application Areas
- High-speed machine tool spindles for precision machining centers
- Precision grinding spindles requiring minimal thermal expansion
- High-frequency motor spindles in manufacturing automation
- Medical device rotors and dental handpieces
- Aerospace instrumentation and navigation systems
- Semiconductor manufacturing equipment requiring ultra-clean operation
