71901 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71901 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71901 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universal matchable (SU) bearing, it can be paired with another identical bearing in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement to optimize system performance. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy from its P4A tolerance class, and high-speed capability enabled by its phenolic cage and ceramic balls. This bearing is pre-lubricated for immediate use and is ideal for compact, high-reliability systems.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Bearing series and size designation (12mm bore, 24mm OD) |
| CD | Contact angle of 15° |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGA | Universal Matchable (SU) arrangement, Extra light preload (Class A) |
71901 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, wear, and heat generation. This extends service life and allows for higher limiting speeds (140,000 rpm) compared to all-steel equivalents.
Phenolic Cage: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low centrifugal forces at high speeds, contributing to smooth operation and reduced vibration.
High Precision & Rigidity: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and superior rotational accuracy. The 15° contact angle and universal matchable design provide high system rigidity when mounted in pairs.
Optimized Load Capacity: Engineered to handle combined loads effectively, with a dynamic load rating of 981 lbf and a static load rating of 562 lbf. The extra light preload ensures precise shaft positioning and minimal deflection under load.
71901 CD/HCP4ADGA Bearing Typical Application Areas
The 71901 CD/HCP4ADGA is ideally suited for high-performance applications where speed, precision, and reliability are critical. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- Dental and Medical Handpieces
- Semiconductor Manufacturing Equipment
- Aerospace Gyroscopes and Instrumentation
- High-Frequency Motors and Robotics
