71972 CDMA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71972 CDMA/P4A Bearing Product Overview & Core Advantages
The 71972 CDMA/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior rotational accuracy. As a P4 (ABEC-7) tolerance class bearing, it delivers exceptional dimensional stability and running accuracy. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, with the 15° contact angle providing optimal axial load capacity. The phenolic cage and precision-ground components enable high-speed operation up to 3,600 rpm, making it ideal for demanding applications where rigidity and precision are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71972 | Basic bearing designation with 360mm bore, 480mm OD |
| C | 15° contact angle design |
| DM | Duplex matched set designation |
| A | Specific internal design and preload level |
| P4 | P4 tolerance class (ABEC-7 precision) |
| A | Accuracy class designation |
71972 CDMA/P4A Bearing Structural Features & Performance Benefits
High Precision Construction: Manufactured to P4 tolerance standards with precise bearing dimensions (bore: 360mm, OD: 480mm) ensuring minimal runout and vibration.
Optimized Load Capacity: The 15° contact angle enables efficient handling of combined radial and axial loads, with dynamic load rating of 89,325 lbf and static load rating of 159,750 lbf.
High-Speed Performance: Phenolic resin cage provides excellent dimensional stability at high speeds, supporting limiting speeds of 3,600 rpm with reduced friction.
Premium Material Quality: Chrome steel rings and balls ensure exceptional durability and wear resistance, while the open design allows for customized lubrication schemes.
Thermal Stability: Operating temperature range of -30°C to 110°C maintains performance across various environmental conditions.
71972 CDMA/P4A Bearing Typical Application Areas
- Machine tool spindles for high-precision machining centers
- High-speed industrial pumps and compressors
- Precision gearboxes in industrial machinery
- Aerospace positioning systems requiring high accuracy
- Medical equipment spindles for diagnostic and treatment devices
- Robotic arm joints and precision motion control systems
