71932 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71932 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71932 CD/P4ADGA is a super-precision angular contact ball bearing designed for the most demanding applications. As a P4A tolerance class bearing, it delivers exceptional rotational accuracy and dimensional stability. Its core advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high precision, making it ideal for high-speed spindles and other precision machinery. The Universal Matchable (SU) designation allows for flexible mounting in preloaded sets to achieve optimal stiffness and system performance.
71932 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71932 | Basic bearing designation, indicating a metric, super-precision angular contact bearing with a 160mm bore. |
| CD | A 15° contact angle and specific internal design optimized for high-speed operation and universal matching. |
| P4A | Indicates an extra-light preload (Class A) and a super-precision tolerance class (P4), ensuring minimal runout and vibration. |
| DGA | Specifies the phenolic (polyamide) cage material, which contributes to lower friction, higher limiting speeds, and suitability for a wide temperature range. |
71932 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with exceptionally tight dimensional tolerances on the bore, outside diameter, and width. This ensures superior running accuracy and system stability under load.
- Optimized High-Speed Performance: The lightweight phenolic cage (DGA) reduces centrifugal forces and allows for a high limiting speed of 11,000 rpm. The 15° contact angle is ideal for applications where high-speed capability is critical.
- Superior Load Capacity: Engineered to support significant combined radial and axial loads, with a dynamic load rating of 47,700 lbf and a static load rating of 72,000 lbf.
- Universal Matching Capability (SU): Bearings are universally matchable, meaning they can be mounted in any combination (back-to-back, face-to-face, or tandem) to create a preloaded set, simplifying installation and optimizing system rigidity.
71932 CD/P4ADGA Bearing Typical Application Areas
The 71932 CD/P4ADGA is specified for high-performance machinery requiring extreme precision and speed. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other sensitive instrumentation.
- High-Frequency Motors and Spindles: Where minimal vibration and maximum rotational accuracy are paramount.
