7008 CE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7008 CE/HCP4ALDT Bearing Product Overview & Core Advantages
The 7008 CE/HCP4ALDT is a high-precision duplex tandem angular contact ball bearing designed for extreme performance applications. This P4A tolerance class bearing features a ceramic ball and phenolic cage construction, enabling exceptional high-speed capabilities up to 56,000 rpm. Its duplex tandem (DT) arrangement provides maximum axial stiffness and load capacity in one direction, making it ideal for machine tool spindles and other high-precision rotary systems requiring superior rigidity and rotational accuracy.
7008 CE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CE | Hybrid Ceramic Balls | Reduced centrifugal forces, lower friction, and enhanced high-speed performance |
| HC | Phenolic Resin Cage | Excellent strength-to-weight ratio and reduced friction at high speeds |
| P4A | Ultra-Precision Tolerance Class | Superior running accuracy and dimensional stability |
| DT | Duplex Tandem Arrangement | Maximum axial load capacity and stiffness in one direction |
7008 CE/HCP4ALDT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds while maintaining dimensional stability across the operating temperature range (-30°C to 110°C).
Optimized Cage Technology: The phenolic resin cage provides excellent strength with minimal weight, contributing to reduced vibration and smoother operation at extreme rotational speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal runout for critical applications.
Enhanced Load Capacity: With a 15° contact angle and duplex tandem arrangement, the bearing achieves a dynamic load rating of 4478 lbf and static load rating of 3442 lbf, providing reliable performance under demanding conditions.
7008 CE/HCP4ALDT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding machines
- High-Speed Motors: Industrial spindle motors and high-frequency applications
- Precision Instrumentation: Medical equipment, semiconductor manufacturing tools
- Aerospace Components: Guidance systems and auxiliary power units
- Robotics: High-precision robotic arm joints and rotary actuators
