7002 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7002 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7002 ACDGA/P4A is a single-row angular contact ball bearing engineered for ultra-high precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to ABEC 7/P4A tolerance class, this bearing delivers superior running precision and dimensional stability. Its ceramic balls and phenolic cage combination enables outstanding high-speed performance while maintaining minimal thermal expansion. The bearing's 25° contact angle provides optimal axial load capacity while accommodating radial loads, making it ideal for precision spindles and high-accuracy rotary systems.
7002 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | Angular Contact design | Optimized for combined radial and axial loads |
| DGA | Universal Matchable (SU designation) | Can be paired in multiple configurations for preload control |
| P4A | ABEC 7/P4A tolerance class | Ultra-precision running accuracy and dimensional stability |
7002 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, enabling higher limiting speeds (95,000 rpm) while providing excellent electrical insulation properties and corrosion resistance.
Phenolic Resin Cage: The phenolic cage material offers superior strength-to-weight ratio and excellent dimensional stability at high speeds, contributing to reduced vibration and noise levels during operation.
Precision Ground Components: With bore and outside diameter tolerances of -0.004mm to 0, and width tolerance of -0.2mm to 0, this bearing ensures exact fitment and consistent performance in precision assemblies.
Universal Matching Capability: Designed as part of a 3-bearing matched set, these bearings can be arranged in various configurations (back-to-back, face-to-face, or tandem) to achieve specific preload and stiffness requirements.
7002 ACDGA/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: CNC machining centers, grinding spindles, and milling applications requiring precision and speed
- Precision Medical Equipment: Dental handpieces, surgical tools, and laboratory instrumentation
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and inspection equipment
- High-Frequency Motors: Spindle motors, high-RPM drives, and precision servo systems
