7008 CE/HCDGAVQ126
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
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7008 CE/HCDGAVQ126 Bearing Product Overview & Core Advantages
The 7008 CE/HCDGAVQ126 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a 15° contact angle optimized for high-speed operation. Its ceramic balls and P4A super-precision tolerance class ensure minimal vibration and superior running accuracy, making it ideal for high-rigidity applications where positional stability is critical. The bearing comes pre-lubricated and is universally matchable (SU), allowing for flexible mounting configurations in paired sets to handle bidirectional axial loads.
7008 CE/HCDGAVQ126 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CE | Enhanced internal design with optimized contact conditions | Improved load distribution and reduced stress concentrations |
| HC | Hybrid Ceramic construction (Ceramic balls with steel rings) | Higher speed capability, reduced weight, and electrical insulation |
| DG | Universal matchable bearing designation | Flexible mounting in any combination (face-to-face, back-to-back) |
| A | Extra light preload classification | Minimal starting torque, ideal for high-speed applications |
| VQ126 | Special vibration qualification and quality grade | Exceptional quiet operation and reduced vibration levels |
7008 CE/HCDGAVQ126 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls provides significant advantages including 40% lower density than steel, reducing centrifugal forces and enabling higher limiting speeds (43,000 rpm). The ceramic material's inherent properties also provide electrical insulation and superior performance in lubricant-starved conditions.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures extremely tight dimensional and running accuracy. The phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at high speeds, contributing to the bearing's overall high-speed capability.
Universal Matching Capability: As an SU designation bearing, the 7008 CE/HCDGAVQ126 can be mounted in any combination with another identical bearing. This flexibility allows engineers to create optimized bearing arrangements that provide high rigidity and precise axial positioning while handling combined loads in both directions.
Optimized Load Capacity: With a dynamic load rating of 4478 lbf and static load rating of 3442 lbf, this bearing delivers reliable performance under demanding operating conditions. The 15° contact angle provides an optimal balance between radial and axial load capacity.
7008 CE/HCDGAVQ126 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes requiring exceptional running accuracy
- Precision Instrumentation: Measuring equipment, optical systems, and laboratory instruments demanding minimal vibration
- High-Speed Motors: Electric vehicle traction motors, aerospace actuators, and industrial servo motors
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems requiring reliability and precision
- Robotics and Automation: Robot arm joints, precision positioning stages, and automated assembly equipment
- Aerospace Systems: Guidance systems, flight control actuators, and auxiliary power units
