71906 CD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71906 CD/P4ADGB Bearing Product Overview & Core Advantages
The 71906 CD/P4ADGB is a super-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded duplex set, it is engineered to handle combined loads with high stability. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other critical machinery where minimal runout and high rigidity are paramount.
71906 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
- 71906: Basic designation for a super-precision, light series angular contact bearing with a 30mm bore and 47mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed applications requiring high rigidity.
- D: Indicates the bearing is part of a universal matchable (SU) duplex set. Two bearings are pre-arranged to be mounted in either a back-to-back (DB) or face-to-face (DF) configuration.
- P4A: Specifies an ultra-precision tolerance class exceeding ABEC 7, ensuring extremely tight dimensional and running accuracy.
- DGB: Indicates a light preload (Class B) is applied to the duplex set. This preload eliminates internal clearance, enhancing system stiffness and rotational accuracy.
71906 CD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity and Accuracy: The duplex set configuration and applied light preload (Class B) work in unison to provide a highly rigid bearing system, significantly reducing axial and radial deflection under load. The P4A tolerance class guarantees superior running accuracy for precise applications.
Superior High-Speed Performance: Featuring a phenolic resin cage, this bearing is optimized for high-speed operation. The lightweight cage, combined with the 15° contact angle, reduces centrifugal forces and friction, enabling a high limiting speed of 100,500 rpm.
Optimized Load Capacity: The angular contact design allows the bearing to support substantial combined radial and axial loads simultaneously. The universal matchable design provides flexibility in mounting arrangements to best suit the load conditions of the application.
71906 CD/P4ADGB Bearing Typical Application Areas
The 71906 CD/P4ADGB is indispensable in high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotic Drives: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Advanced Medical Equipment: CT scanner gantries and surgical power tools.
