71948 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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71948 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71948 CD/HCP4ADGA is a precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it is designed to accommodate combined loads—simultaneously handling significant radial and axial loads. Its construction with a ceramic ball and phenolic cage contributes to superior high-speed capabilities and reduced rotating mass. Operating within a P4A tolerance class, this bearing ensures ultra-precise rotational accuracy, making it ideal for high-rigidity, high-reliability spindle arrangements.
71948 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | A 15° contact angle and specific internal design optimized for high-speed operation. |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls, which reduce weight and inertia for higher speeds. |
| P4A | Indicates a super-precision tolerance class with even tighter specifications than ABEC 7 (P4), ensuring minimal runout and vibration. |
| DGA | Universal Matchable (SU): The bearing is supplied as one of a pair that can be arranged in either a back-to-back (DB) or face-to-face (DF) configuration without additional machining or selection. |
71948 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The universal matchable pair design allows for the creation of a pre-loaded bearing system that provides high rigidity, enabling precise control of shaft displacement under combined radial and axial loads.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage significantly reduces centrifugal forces and maintains dimensional stability at high temperatures, allowing for a high limiting speed of 7,500 rpm.
- Extended Service Life: Hybrid ceramic construction offers superior wear resistance and operates effectively with minimal lubrication. The phenolic cage is durable and provides excellent performance in high-speed environments.
- Precision Engineering: Manufactured to P4A super-precision standards with tight dimensional tolerances, this bearing ensures smooth, quiet, and vibration-free operation critical for high-precision machinery.
71948 CD/HCP4ADGA Bearing Typical Application Areas
The 71948 CD/HCP4ADGA is ideally suited 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 Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Motors for PCB drilling and semiconductor manufacturing equipment.
