71932 CD/P4ADBD
71900 Series Super Precision Angular Contact Ball Bearings
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71932 CD/P4ADBD Bearing Product Overview & Core Advantages
The 71932 CD/P4ADBD is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched back-to-back arrangement provides superior stability under combined loads (radial and axial) and moments. Preloaded to Heavy / Class D standards, it ensures minimal axial and radial runout, making it ideal for high-precision, high-rigidity systems. Its P4A tolerance class guarantees ultra-precise dimensional and running accuracy for superior performance.
71932 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
- 71932: Basic designation for a high-precision angular contact ball bearing series with a 160 mm bore and 220 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for handling high axial loads.
- D: Indicates the bearing is preloaded to a Heavy / Class D specification for maximum rigidity.
- P4A: Specifies a very high tolerance class, exceeding ABEC 7/ISO P4 standards, for exceptional running accuracy and dimensional precision.
- DB: Signifies the bearings are supplied as a Duplex Back-to-Back matched set.
71932 CD/P4ADBD Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring exceptional operational stability.
Superior Load Capacity: The 15° contact angle and robust construction enable the bearing to handle significant combined radial and axial loads simultaneously.
Precision Performance: Manufactured to P4A tolerance class and featuring a phenolic cage, this bearing delivers ultra-smooth operation with minimal vibration and noise, which is critical for high-speed applications.
Optimized for High-Speed Operation: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 11,000 rpm. The bearings are pre-lubricated for immediate operation.
71932 CD/P4ADBD Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, rigidity, and speed are paramount. Key applications include:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Speed Precision Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Precision Gearboxes
- Aerospace and Defense Positioning Systems
