71906 CD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71906 CD/HCP4ADT Bearing Product Overview & Core Advantages
The 71906 CD/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring high speed and rigidity. This duplex tandem (DT) matched set is preloaded, offering exceptional axial and radial load capacity in a compact design. Manufactured to ABEC 7 / P4A tolerance standards, it ensures superior running accuracy and is pre-lubricated for immediate use. The combination of a ceramic ball and phenolic cage enables outstanding high-speed performance, making it ideal for high-precision, high-reliability spindles and machinery.
71906 CD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD). |
| C | 15° contact angle, optimized for high-speed operation and combined loads. |
| D | Duplex bearing designation. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction, lower heat generation, and higher speed capability. |
| P4A | High-Precision Tolerance Class (equivalent to ABEC 7), ensuring minimal runout and vibration. |
| A | Specific internal geometry and tolerance for optimal performance in a matched set. |
| DT | Duplex Tandem arrangement. Two bearings are mounted in tandem to increase axial load capacity in one direction. |
71906 CD/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex tandem arrangement and preload create an exceptionally rigid bearing system, capable of handling significant combined radial and axial loads. This setup is engineered to prevent axial play under operational conditions.
Superior High-Speed Performance: The hybrid ceramic design with silicon nitride balls and a lightweight phenolic resin cage drastically reduces centrifugal forces and operating temperatures. This allows the bearing to achieve a high limiting speed of 100,500 rpm with exceptional stability.
Precision and Longevity: Manufactured to P4A tolerances from high-grade chrome steel rings, this bearing guarantees precise shaft guidance and low noise operation. The open seal type, combined with the inherent properties of ceramic balls, contributes to a long service life even in high-speed environments.
71906 CD/HCP4ADT Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors operating at very high RPMs.
- Medical and Dental Equipment: High-speed handpieces and surgical tools.
- Aerospace and Defense: Gyroscopes and other precision instrumentation.
