71906 CDGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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71906 CDGB/HCP4A Bearing Product Overview & Core Advantages
The 71906 CDGB/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and speed capability. Positioned in the P4A super-precision tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its ceramic ball construction and phenolic cage enable outstanding high-speed performance while maintaining rigidity. The bearing comes prelubricated and is universally matchable (SU), allowing for precise axial preload adjustment when mounted in pairs, making it ideal for applications demanding extreme precision and reliability.
71906 CDGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series designation, indicating a high-precision angular contact bearing with 30mm bore, 47mm OD, and 9mm width. |
| C | 15° contact angle, optimized for combined radial and axial loads. |
| DB | Back-to-back matched arrangement (when paired). |
| G | Universal Matchable (SU designation), allowing for precise preload control in pairs. |
| HC | Hybrid Ceramic construction, featuring ceramic balls for enhanced performance. |
| P4A | Super precision tolerance class, exceeding ABEC 7 standards for exceptional running accuracy. |
71906 CDGB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls provides superior high-speed capability, reduced friction, and extended service life compared to all-steel bearings. The ceramic balls also offer electrical insulation and reduced thermal expansion.
Phenolic Cage Construction: The phenolic resin cage ensures excellent dimensional stability at high speeds and temperatures, contributing to the bearing's impressive limiting speed of 100,500 rpm.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore diameter, outside diameter, and width, ensuring consistent high-performance operation.
Universal Matching Capability: As an SU universal match bearing, it can be paired in back-to-back (DB) arrangements to achieve precise light preload (Class B) without selective matching, simplifying installation and optimizing system rigidity.
71906 CDGB/HCP4A Bearing Typical Application Areas
- High-speed machine tool spindles for precision machining centers
- Precision grinding spindles in manufacturing equipment
- High-frequency motor spindles and servo motors
- Aerospace components including gyroscopes and navigation systems
- Medical equipment such as dental handpieces and surgical tools
- Semiconductor manufacturing equipment requiring ultra-precise motion control
