7007 CDGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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7007 CDGC/HCP4A Bearing Product Overview & Core Advantages
The 7007 CDGC/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single bearing features a 15° contact angle and is manufactured to P4A super-precision tolerance, ensuring minimal runout and vibration. Its ceramic ball construction and phenolic cage contribute to superior high-speed performance and reduced rotating mass. Preloaded to Moderate / Class C, it delivers high system stiffness and is universally matchable (SU), allowing for flexible arrangement in sets of three to handle combined loads effectively.
7007 CDGC/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Standard bore diameter (35 mm) and series designation. |
| CD | 15° contact angle design. |
| GC | Indicates a Moderate / Class C preload for high rigidity. |
| HC | Hybrid Ceramic construction, featuring ceramic balls for high-speed and longevity. |
| P4A | Denotes super-precision tolerance class, exceeding ABEC 7 standards. |
7007 CDGC/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (56,000 rpm) and extended service life compared to all-steel bearings. They also provide electrical insulation and are suitable for a wider temperature range (-30°C to 110°C).
- Phenolic Resin Cage: This lightweight and robust cage material offers excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced centrifugal forces.
- Precision & Rigidity: Manufactured to P4A tolerance and preloaded, this bearing ensures precise shaft positioning, high system stiffness, and minimal deflection under combined radial and axial loads.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it can be mounted in tandem or back-to-back arrangements in sets of three, allowing for precise control over preload and rigidity in complex spindle designs.
7007 CDGC/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and rotary encoders.
- High-Speed Motors and Drives: Servo motors, turbo-molecular pumps, and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
