7007 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7007 ACE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7007 ACE/HCP4ADGA is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a 25° contact angle optimized for high axial load capacity. Its P4A tolerance class ensures ultra-precise rotational accuracy, while the ceramic balls and phenolic cage contribute to superior high-speed performance and reduced friction. The universal matchable (SU) design allows for flexible mounting arrangements in preloaded sets, delivering outstanding rigidity and operational stability in demanding environments.
Model Code Breakdown
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACE | 25° Contact Angle, Enhanced Design | Optimized for high axial load capacity and rigidity |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Higher speed capability, reduced friction, and longer service life |
| P4A | ABEC 7 / ISO P4A Tolerance Class | Ultra-precision running accuracy for critical applications |
| DGA | Universal Matchable (SU), Extra Light Preload (Class A) | Flexible mounting in pairs, providing optimal preload for high rigidity |
7007 ACE/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of silicon nitride ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (56,000 rpm). This material combination also provides excellent electrical resistance and operates effectively in marginal lubrication conditions.
Phenolic Resin Cage: The lightweight phenolic cage offers superior strength and dimensional stability at high speeds, contributing to smooth operation and reduced vibration.
Precision Ground Geometry: Manufactured to P4A tolerance standards with tight dimensional control on bore, outside diameter, and width, ensuring precise fit and minimal runout.
Universal Matching Design (SU): As a universal matchable bearing, two bearings can be paired in any combination (face-to-face, back-to-back, or tandem) to create a preloaded set that delivers exceptional system rigidity and handles combined loads efficiently.
7007 ACE/HCP4ADGA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling applications requiring high precision and speed.
- Precision Robotics: In robot arm joints and rotary actuators where accuracy, rigidity, and high-speed response are critical.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring reliable high-speed operation.
- Medical Equipment: High-speed dental handpieces, centrifuges, and imaging device rotors.
- Semiconductor Manufacturing: Wafer handling robots and precision stages in cleanroom environments.
