71906 CDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
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71906 CDTP/HCP4B Bearing Product Overview & Core Advantages
The 71906 CDTP/HCP4B is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle combined loads, primarily thrust loads, with a 15° contact angle that optimizes axial load capacity. Its compact design, featuring a 9 mm width, makes it ideal for space-constrained, high-performance assemblies. The combination of a phenolic cage and ceramic balls contributes to its high-speed capability, low friction, and extended service life.
71906 CDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing designation, indicating a high-precision, light series angular contact bearing with a 30 mm bore. |
| C | Specifies a 15° contact angle, optimized for high-speed applications with significant axial loads. |
| DTP | Indicates the bearing is supplied as a matched set (Duplex) in a Tandem (T) arrangement with a light preload (P) applied. This configuration provides increased axial rigidity and precise shaft positioning. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce weight, friction, and heat generation. |
| P4B | Denotes a very high precision tolerance class (P4), equivalent to ABEC-7. The "B" suffix may indicate specific running accuracy requirements within this class. |
71906 CDTP/HCP4B Bearing Structural Features & Performance Benefits
- High-Speed & Low Friction Performance: The phenolic resin cage offers excellent dimensional stability and low centrifugal force at high speeds, while the ceramic (silicon nitride) balls significantly reduce friction, heat buildup, and allow for a limiting speed of 40,000 rpm.
- Enhanced Rigidity & Precision: The bearing is supplied as a preloaded duplex set in tandem arrangement. This eliminates axial play, increases system stiffness, and ensures exceptional running accuracy for precise shaft control.
- Superior Load Capacity: The 15° contact angle is optimized to handle significant axial loads in one direction, while also supporting substantial radial loads. The dynamic and static load ratings are 1609 lbf and 1024 lbf respectively.
- Extended Service Life & Reliability: The hybrid ceramic design provides superior resistance to wear and degradation. The open seal type allows for optimized lubrication management in clean environments, contributing to long-term reliability.
71906 CDTP/HCP4B Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- Robotic Drives and Actuators
- High-Frequency Motors and Spindles
- Aerospace Control Systems
- Medical and Dental Handpiece Drives
