71906 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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71906 CD/HCP4A Bearing Product Overview & Core Advantages
The 71906 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and high-speed operation. Its design is optimized to support significant combined loads, handling both radial and axial forces efficiently. Manufactured to the stringent P4 (ABEC-7) tolerance class, this bearing ensures exceptional running accuracy. The use of a phenolic cage and ceramic balls contributes to its superior performance in demanding environments, offering high rigidity and extended service life.
71906 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71906 | Standard bearing series designation, defining the basic size (30mm bore, 47mm OD, 9mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| D | Indicates that the bearing is part of a matched set for preload applications (though supplied as a single unit here). |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Denotes the P4 tolerance class (ABEC-7), ensuring ultra-high precision and running accuracy. |
| A | Indicates that the bearing is pre-lubricated and ready for installation. |
71906 CD/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row angular contact design, combined with a 15° contact angle and P4 precision, provides excellent rigidity and running accuracy, making it ideal for high-speed spindles.
Superior Load Capacity: Engineered to handle combined radial and axial loads simultaneously. With a dynamic load rating of 1609 lbf and a static load rating of 1024 lbf, it offers reliable performance under significant stress.
Enhanced High-Speed Performance: The phenolic resin cage and ceramic balls significantly reduce centrifugal forces and friction, enabling a high limiting speed of 60,000 rpm. The hybrid construction also reduces heat generation at high speeds.
Optimized for Demanding Environments: The open seal type allows for custom lubrication schemes, while the standard pre-lubrication ensures immediate operational readiness. The wide operating temperature range of -30°C to 110°C adds to its versatility.
71906 CD/HCP4A Bearing Typical Application Areas
The 71906 CD/HCP4A is ideally suited for high-performance applications where speed, precision, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers and grinding spindles.
- Precision Robotics: High-accuracy joints and arm assemblies.
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and surgical drill motors.
- Turbochargers and High-Speed Compressors: Where extreme rotational speeds are encountered.
