S71908 CDTP/P4B
Sealed Super Precision Angular Contact Ball Bearings
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S71908 CDTP/P4B Bearing Product Overview & Core Advantages
The S71908 CDTP/P4B is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single-row bearing with a 15° contact angle and available preload, it excels at handling combined loads (simultaneous radial and axial loads). Manufactured to P4 (ABEC-7) tolerance class, it ensures superior running accuracy, making it an ideal choice for high-speed spindles and other high-precision machinery. Its compact design, combined with a phenolic cage and factory lubrication, provides a reliable, high-performance solution in a minimal footprint.
S71908 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings. |
| 1908 | Standard size designation (Bore: 40mm, OD: 62mm, Width: 12mm). |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| D | Indicates a high-precision phenolic resin cage. |
| T | Signifies that the bearing is preloaded for enhanced rigidity. |
| P | Denotes the bearing is lubricated from the factory. |
| P4B | Specifies the P4 (ABEC-7) tolerance class for ultra-precise running accuracy. |
S71908 CDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Running Accuracy: The combination of a 15° contact angle and applied preload significantly increases system stiffness, minimizing deflection under load and ensuring precise rotational performance, which is critical for machine tool spindles.
- Superior High-Speed Capability: The lightweight, robust phenolic resin cage (D) is engineered for high centrifugal forces, enabling stable operation at the limiting speed of 22,000 rpm. The optimized internal geometry further reduces friction and heat generation.
- Excellent Load Capacity: The angular contact design efficiently supports combined radial and axial loads. With a dynamic load rating of 2790 lbf and a static load rating of 1912 lbf, it offers reliable performance in demanding applications.
- Ready-to-Install and Long-Lasting: The bearing is supplied lubricated (P) and sealed, protecting it from contamination during handling and storage, ensuring immediate and reliable service upon installation.
S71908 CDTP/P4B Bearing Typical Application Areas
The S71908 CDTP/P4B is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Precision Machine Tool Spindles: For milling, grinding, and turning centers.
- High-Frequency Motors and Spindles: Used in PCB drilling and precision engraving.
- Robotics: Critical components in robotic arm joints and precision gearboxes.
- Medical and Dental Equipment: High-speed handpieces and imaging scanner rotors.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and navigation instruments.
