71906 CDTP/P4B
71900 Series Super Precision Angular Contact Ball Bearings
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71906 CDTP/P4B Bearing Product Overview & Core Advantages
The 71906 CDTP/P4B is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle significant combined loads, particularly thrust loads in one direction, making it ideal for high-speed spindles and precision machinery. Its compact design, with a 15° contact angle, provides excellent high-speed performance and operational stability. The bearing is preloaded and comes pre-lubricated, ensuring immediate readiness for installation and reliable performance from the outset.
71906 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71906 | Basic bearing series and size designation (30mm bore, 47mm OD, 9mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| DT | Indicates a matched pair arrangement of two single bearings for increased rigidity and load capacity. |
| P | Denotes the bearing is supplied with a preload for enhanced stiffness and rotational accuracy. |
| P4B | Specifies the tolerance class P4 (ABEC-7), indicating very high precision levels for dimensional and running accuracy. |
71906 CDTP/P4B Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The single-row angular contact design, combined with a phenolic resin cage and P4 precision, ensures low vibration, minimal noise, and exceptional running accuracy, which is critical for machine tool spindles.
Superior Load Capacity: With a 15° contact angle, this bearing is engineered to efficiently support combined radial and axial loads. The matched pair (DT) and preload (P) configuration significantly enhances system rigidity and load-sharing capabilities.
Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the precision-ground chrome steel components and optimized internal geometry contribute to a high limiting speed of 32,000 rpm.
Ready-to-Install Convenience: The bearing is supplied pre-lubricated and with a factory-set preload, simplifying the installation process and ensuring immediate, reliable performance without additional adjustments.
71906 CDTP/P4B Bearing Typical Application Areas
The 71906 CDTP/P4B is ideally suited for high-performance applications requiring high speed, precision, and rigidity, including:
- Machine Tool Spindles (milling, grinding, and lathe spindles)
- High-Frequency Motors and Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- High-Speed Pumps and Compressors
