7007 ACE/HCP4ALDGA
Hybrid Ceramic Super Precision Bearings
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7007 ACE/HCP4ALDGA Bearing Product Overview & Core Advantages
The 7007 ACE/HCP4ALDGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing is designed to accommodate combined loads (radial and axial) simultaneously. Its key advantages include superior running accuracy due to the P4A tolerance class, high-speed capability enabled by the phenolic cage and ceramic balls, and excellent operational stability. The preloaded Extra light (Class A) design ensures low noise and vibration, making it ideal for high-reliability, precision systems.
7007 ACE/HCP4ALDGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series, 35mm bore, 62mm OD, 28mm width |
| ACE | Angular Contact design with a 25° contact angle |
| HC | Hybrid Ceramic: Ceramic balls with steel rings |
| P4A | High Precision Tolerance Class (superior to ABEC 7) |
| L | Light preload designation |
| DGA | Universal Matchable (SU) arrangement in a duplex set |
7007 ACE/HCP4ALDGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, increases limiting speed (56,000 rpm), and provides superior resistance to wear and heat generation. This makes the bearing ideal for high-speed applications.
Phenolic Cage: The lightweight phenolic resin cage contributes to lower centrifugal forces at high speeds, reduced vibration, and excellent dimensional stability across the operating temperature range (-30°C to 110°C).
Universal Matchability (SU): As a universal matchable bearing, two bearings can be paired in a duplex set (back-to-back, face-to-face, or tandem) without selective mounting, simplifying assembly and ensuring optimal preload and stiffness.
High Precision & Rigidity: The P4A tolerance class and 25° contact angle deliver exceptional running accuracy and rigidity, capable of handling significant combined loads (Dynamic: 4005 lbf, Static: 2812 lbf).
7007 ACE/HCP4ALDGA Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery requiring maximum precision and speed:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace & Defense Actuators
- Semiconductor Manufacturing Equipment
- Medical & Dental Handpieces
