71907 CDTP/P4B
71900 Series Super Precision Angular Contact Ball Bearings
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71907 CDTP/P4B Bearing Product Overview & Core Advantages
The 71907 CDTP/P4B is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its defining feature is the 15° contact angle, which enables it to support combined loads—handling significant radial forces alongside thrust loads in one direction. Manufactured to the exacting P4 (ABEC-7) tolerance class, this bearing ensures exceptional running accuracy and rotational stability. The combination of a phenolic cage, preloaded configuration, and factory-applied lubrication makes it an ideal solution for high-speed spindles and other precision machinery where rigidity and minimal runout are critical.
71907 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation (35mm bore, 55mm OD, 10mm width). |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| DT | Indicates a matched pair of bearings in a tandem arrangement (duplex). |
| P | Signifies that the bearing set is supplied with a preload for enhanced rigidity. |
| P4B | Denotes the P4 tolerance class (equivalent to ABEC-7), ensuring ultra-precision. |
71907 CDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Axial Load Capacity: The angular contact design and preload work in unison to provide exceptional system stiffness, minimizing deflection under load. This is critical for maintaining accuracy in machining and positioning applications.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle lowers heat generation. This combination allows the bearing to achieve its high limiting speed of 26,000 rpm.
- Precision Engineering: Adherence to the P4 tolerance class guarantees tight control over internal dimensions and running accuracy, resulting in smooth, quiet operation with minimal vibration.
- Superior Material Construction: Manufactured from chrome steel for both rings and balls, the bearing provides high fatigue life and durability under demanding operating conditions.
71907 CDTP/P4B Bearing Typical Application Areas
The 71907 CDTP/P4B is designed for high-performance applications where precision and speed are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and high-frequency motor spindles.
- Robotics: High-accuracy joints and actuators.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace & Defense: Gyroscopes, navigation systems, and radar equipment.
