71932 CD/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
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71932 CD/P4ADBA Bearing Product Overview & Core Advantages
The 71932 CD/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This P4A tolerance class bearing features a back-to-back (DB) matched arrangement and an extra light preload (Class A), making it ideal for machine tool spindles and other high-precision machinery. Its duplex design enables it to support combined loads (radial and axial) simultaneously from both directions, offering superior stability and operational reliability in demanding conditions.
71932 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71932 | Basic bearing series and size designation. |
| C | 15° contact angle. |
| D | Duplex back-to-back (DB) arrangement. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| DB | Duplex Back-to-Back pre-mounted set. |
| A | Extra light preload classification. |
71932 CD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing system rigidity and moment load capacity, which is critical for maintaining precision under heavy combined loads.
- Superior Precision: Manufactured to P4A tolerance class with extremely tight dimensional runouts, this bearing ensures minimal vibration and high running accuracy for applications like high-speed spindles.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage and 15° contact angle are engineered to reduce centrifugal forces and friction, enabling a high limiting speed of 11,000 rpm.
- Robust Load Capacity: With a dynamic load rating of 47,700 lbf and a static load rating of 72,000 lbf, the bearing is capable of handling significant radial and bidirectional axial loads.
- Pre-Lubricated & Open Design: The bearing comes pre-lubricated and features an open seal type, allowing for optimal lubrication management in controlled environments and facilitating easy re-lubrication if necessary.
71932 CD/P4ADBA Bearing Typical Application Areas
The 71932 CD/P4ADBA is engineered for high-performance applications where precision and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace Positioning Systems
