71972 CDMA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71972 CDMA/HCP4A Bearing Product Overview & Core Advantages
The 71972 CDMA/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior dynamic performance. Positioned in the P4 (ABEC-7) tolerance class, it is designed to accommodate primarily axial loads in one direction, as well as combined loads. Its ceramic ball construction and phenolic cage contribute to its suitability for high-speed operation and reduced rotational inertia. The bearing is supplied pre-lubricated and is available with a preload, ensuring immediate operational readiness and high system rigidity.
71972 CDMA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71972 | Basic bearing series and size designation. |
| C | Specific internal design and contact angle of 15°. |
| DM | Indicates a matched arrangement designation (supplied as a single bearing in this case). |
| A | Signifies that the bearing is supplied with a specific preload. |
| HC | Refers to the hybrid ceramic construction (ceramic balls with steel rings). |
| P4 | Denotes the P4 tolerance class (ABEC-7), indicating very high precision. |
71972 CDMA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This extends bearing life and allows for higher limiting speeds compared to all-steel designs.
- High-Speed Phenolic Cage: The lightweight and robust phenolic cage ensures stable operation at the high limiting speed of 4,300 rpm, providing excellent guidance for the ceramic balls with minimal centrifugal force.
- Preload & High Rigidity: The bearing is supplied with a preload, eliminating internal clearance. This results in high system rigidity, precise shaft positioning, and reduced noise and vibration under load.
- Superior Load Capacity: With a dynamic load rating of 89,325 lbf and a static load rating of 159,750 lbf, this bearing is capable of handling significant combined loads (axial and radial) reliably.
- Precision Engineering: Manufactured to P4 tolerance class, it guarantees minimal runout and consistent performance, which is critical for applications requiring high rotational accuracy.
71972 CDMA/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications in:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace and Defense Actuation Systems
- Advanced Medical and Laboratory Equipment
