7008 ACE/HCDGAVQ126
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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7008 ACE/HCDGAVQ126 Bearing Product Overview & Core Advantages
The 7008 ACE/HCDGAVQ126 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 25° contact angle and ceramic ball construction, delivering superior high-speed capabilities with a limiting speed of 56,000 rpm. Its P4A tolerance class ensures precise rotational accuracy, while the extra light preload (Class A) minimizes friction and heat generation. The combination of chrome steel rings and phenolic cage provides optimal strength and thermal stability, making this bearing ideal for applications requiring high rigidity and reliable operation under combined radial and axial loads.
7008 ACE/HCDGAVQ126 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series with 40mm bore diameter |
| ACE | Angular Contact design with 25° contact angle |
| HCD | Hybrid Ceramic Design with silicon nitride balls |
| GAV | Universal Matchable (SU) arrangement capability |
| Q126 | Enhanced precision and performance designation |
7008 ACE/HCDGAVQ126 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher operating speeds while maintaining dimensional stability. This construction also provides superior corrosion resistance and electrical insulation properties.
Precision Engineering: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration, critical for high-speed applications. The extra light preload (Class A) eliminates internal clearance while maintaining low operating torque.
Optimized Cage Design: The phenolic cage offers excellent strength-to-weight ratio and thermal stability, maintaining dimensional integrity at high rotational speeds while providing smooth ball guidance.
Universal Matching Capability: Designed as universal matchable (SU) bearings, they can be arranged in various configurations (back-to-back, face-to-face, or tandem) without requiring selective matching, simplifying installation and maintenance.
7008 ACE/HCDGAVQ126 Bearing Typical Application Areas
- High-speed machine tool spindles requiring precision and thermal stability
- Precision grinding applications where accuracy and speed are critical
- Medical equipment including dental handpieces and surgical tools
- Aerospace components requiring reliable high-speed operation
- Robotics and automation systems demanding precision motion control
- Semiconductor manufacturing equipment where contamination-free operation is essential
