71906 CB/HCP4A
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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71906 CB/HCP4A Bearing Product Overview & Core Advantages
The 71906 CB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single-row bearing, it is designed to accommodate high combined loads—primarily thrust loads in one direction, with a 15° contact angle optimizing this capability. Its defining features include a P4 (ABEC-7) tolerance class for superior running accuracy, a phenolic resin cage for high-speed operation, and ceramic balls that significantly reduce weight and centrifugal forces. Pre-loaded and pre-lubricated from the factory, this bearing offers high rigidity and is ready for immediate installation in high-performance systems.
71906 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Standard bearing series designation, indicating a light series with a 30mm bore. |
| CB | Specific internal design and clearance, indicating a matched contact angle and preload for optimal rigidity. |
| HC | Hybrid Ceramic, denoting the use of ceramic balls with steel rings. |
| P4 | The tolerance class, equivalent to ABEC-7, specifying very high precision for dimensions and running accuracy. |
| A | Indicates a 30° contact angle (Note: This is a common designation, but the provided specification lists a 15° angle for this specific model). |
71906 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls provides exceptional performance. Ceramic balls are lighter, harder, and electrically resistant, leading to reduced friction, lower operating temperatures, and extended service life, especially in high-speed applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage ensures excellent dimensional stability and guidance of the ceramic balls at the bearing's high limiting speed of 75,000 rpm.
Super-Precision P4 Tolerance: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring high positional accuracy and smooth operation.
Preload & High Rigidity: Supplied with a preload, the bearing achieves high system rigidity and precise rotational accuracy from the moment of installation, minimizing deflection under load.
71906 CB/HCP4A Bearing Typical Application Areas
The 71906 CB/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key application areas include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Medical and Dental Equipment
- Aerospace Actuators and Instrumentation
