7008 CDTP/P4B
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7008 CDTP/P4B Bearing Product Overview & Core Advantages
The 7008 CDTP/P4B is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is optimized to handle combined loads, offering superior performance in high-speed and high-rigidity scenarios. Its phenolic cage and preload capability contribute to stable operation and precise shaft positioning, making it an ideal choice for high-reliability machinery.
7008 CDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Standard bore diameter (40 mm) and series designation. |
| CD | Specifies a 15° contact angle and optimized internal geometry for high-speed operation. |
| T | Indicates a phenolic (resin) cage, which is lightweight and suitable for high-speed applications. |
| P | Denotes that the bearing is supplied with preload for enhanced rigidity and reduced axial play. |
| P4B | Signifies the P4 tolerance class (ABEC-7), ensuring extremely tight dimensional and running accuracy. |
7008 CDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The angular contact design and application of preload significantly increase system rigidity, minimizing deflection under load and ensuring precise shaft guidance. The P4 tolerance class guarantees minimal runout and vibration.
- Superior High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized 15° contact angle minimizes heat generation, allowing for a high limiting speed of 20,000 rpm.
- Excellent Load Capacity: Designed to support combined radial and axial loads simultaneously. With a dynamic load rating of 3780 lbf and a static load rating of 2475 lbf, it offers reliable performance in demanding conditions.
- Optimized Material Selection: Manufactured from chrome steel for both rings and balls, providing high durability, wear resistance, and a long operational lifespan.
7008 CDTP/P4B Bearing Typical Application Areas
The 7008 CDTP/P4B is ideally suited for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles (e.g., CNC milling and grinding machines)
- High-Frequency Motors and Spindles
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Actuation Systems
