71932 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71932 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
5.4 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
160 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
220 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
47700 lbf
Radial static load rating
72000 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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71932 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71932 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability under combined loads, effectively managing radial forces and bidirectional axial thrust. Manufactured to P4A tolerance class, it delivers ultra-precise running characteristics, making it ideal for high-speed spindles and other demanding machinery where uncompromising performance is critical.
71932 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71932 | Basic bearing designation indicating size series and 160 mm bore diameter. |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DB | Signifies the Back-to-Back mounting arrangement, providing high moment rigidity. |
| C (Preload) | Indicates a moderate preload for optimized stiffness and reduced deflection. |
71932 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that significantly increases resistance to moment loads and shaft deflection, ensuring precise alignment under operation.
- Superior Load Capacity: Engineered with a 15° contact angle and high-grade chrome steel components, this bearing is capable of handling significant combined radial and axial loads from both directions simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and ensures stable operation at the high limiting speed of 11,000 rpm.
- Precision Engineering: Conforming to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing guarantees minimal runout and vibration for ultra-smooth rotation.
71932 CD/P4ADBC Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: For CNC milling centers, grinding spindles, and lathes requiring high precision and speed.
- High-Frequency Motors & Spindles: Where high rotational speeds and rigidity are paramount.
- Precision Gearboxes & Drives: Providing accurate shaft positioning and load support.
- Aerospace & Defense Positioning Systems: In gyroscopes, radar equipment, and other critical guidance systems.
