S7008 CDTP/HCP4B
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7008 CDTP/HCP4B Bearing Product Overview & Core Advantages
The S7008 CDTP/HCP4B is a high-precision, sealed single row angular contact ball bearing engineered for demanding applications. Its defining characteristic is the combination of a 15° contact angle and a P4 (ABEC-7) tolerance class, ensuring exceptional running accuracy and dimensional stability. This bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. The use of ceramic balls and a phenolic cage contributes to its superior high-speed performance, reduced weight, and extended service life, making it an ideal choice for high-reliability, high-rigidity spindle systems.
S7008 CDTP/HCP4B Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Benefit |
|---|---|---|
| S7008 | Bearing series and size designation (40mm bore, 68mm OD, 15mm width). | Defines the core bearing dimensions and internal geometry. |
| C | 15° contact angle. | Optimized for high-speed operation and moderate thrust capacity. |
| DTP | Face-to-face duplex arrangement with preload. | Provides maximum rigidity and precise rotational accuracy for spindle applications. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings). | Enables higher limiting speeds, reduced friction, and longer life under poor lubrication conditions. |
| P4 | Tolerance class equivalent to ABEC-7. | Guarantees ultra-precision and minimal runout for high-performance machinery. |
S7008 CDTP/HCP4B Bearing Structural Features & Performance Benefits
Superior Rigidity and Load Capacity: The duplex arrangement (DTP) with a specified preload creates a highly rigid bearing set, significantly increasing system stiffness to resist deflection under heavy combined loads.
Enhanced High-Speed Performance: The combination of ceramic balls (lighter and harder than steel) and a lightweight phenolic cage reduces centrifugal forces, lowers operating temperatures, and allows for a very high limiting speed of 24,000 rpm.
Precision Engineering: Manufactured to P4 tolerance with a consistent 15° contact angle, this bearing delivers exceptional running accuracy and smooth operation, which is critical for minimizing vibration and achieving superior surface finishes in machining applications.
Sealed and Lubricated for Life: The sealed design protects the precision internals from contaminants and retains the factory-applied lubricant, ensuring consistent performance and reducing maintenance requirements.
S7008 CDTP/HCP4B Bearing Typical Application Areas
The S7008 CDTP/HCP4B is specifically designed for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling spindles.
- Precision Robotics: High-accuracy robotic arms and joints requiring minimal backlash.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
- High-Frequency Motors and Spindles: Motors for PCB drilling and other applications demanding extreme rotational velocities.
