7007 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7007 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7007 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 15° contact angle and extra light preload (Class A), making it ideal for arrangements requiring high rigidity and precise rotational characteristics. Its construction with ceramic balls and phenolic cage enables superior high-speed performance and reduced rotational inertia. The bearing comes pre-lubricated and is manufactured to P4A tolerance class, ensuring consistent performance in precision machinery.
7007 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series and size designation |
| CD | 15° contact angle design |
| HC | Hybrid ceramic construction (ceramic balls with steel rings) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGA | Universal matchable designation (SU) for paired mounting |
7007 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls provides exceptional high-speed capability, reduced friction, and extended service life. Ceramic balls offer superior thermal stability and electrical resistance.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore diameter (35 mm), outside diameter (62 mm), and width (28 mm), ensuring precise fit and minimal runout.
Optimized Cage Design: The phenolic resin cage provides excellent strength-to-weight ratio, contributing to higher limiting speeds (56,000 rpm) and reduced vibration.
Universal Matching Capability: As part of a matched set of 2 bearings, this SU designation allows for flexible mounting arrangements to handle combined loads effectively while maintaining optimal preload.
Wide Temperature Range: Operational from -30°C to 110°C with pre-applied lubrication suitable for various environmental conditions.
7007 CD/HCP4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Industrial Pumps & Compressors: Where high rotational accuracy and reliability are critical
- Precision Instrumentation: Medical equipment, measuring devices, and laboratory apparatus
- Aerospace Components: Guidance systems, actuators, and auxiliary power units
- Robotics & Automation: High-precision joints, rotary tables, and positioning systems
