706 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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706 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 706 CDGA/HCP4A is a single-row angular contact ball bearing designed for ultra-high precision applications requiring exceptional rotational accuracy and speed capability. Engineered with ceramic balls and manufactured to P4A super precision tolerance, this bearing delivers superior performance in demanding conditions. Its 15° contact angle is optimized for handling combined loads, particularly high axial loads in one direction, while maintaining high rigidity and minimal thermal expansion. The phenolic cage and universal matching (SU) capability make it ideal for high-speed spindle arrangements.
706 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 706 | Basic bearing series designation |
| C | 15° contact angle for optimal axial load capacity |
| DG | Universal matchable bearing (can be paired in any combination) |
| A | Extra light preload for minimal friction and heat generation |
| HCP4A | Super precision tolerance class (P4A) for exceptional running accuracy |
706 CDGA/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 (140,000 rpm) while providing electrical insulation and reduced thermal expansion.
Precision Phenolic Cage: The lightweight phenolic resin cage offers excellent dimensional stability at high speeds, contributing to smooth operation and reduced vibration.
Super Precision Tolerance: Manufactured to P4A tolerance class with tight dimensional control (bore: -0.004mm to 0, OD: -0.004mm to 0), ensuring exceptional running accuracy and minimal runout.
Universal Matching Capability: Designed as universal matchable (SU) bearings, they can be arranged in multiple configurations (back-to-back, face-to-face, or tandem) without selective assembly.
706 CDGA/HCP4A Bearing Typical Application Areas
- High-speed machine tool spindles for precision machining centers
- PCB drilling and routing spindles requiring extreme rotational accuracy
- Medical device motors and surgical handpieces
- Aerospace gyroscopes and navigation systems
- Semiconductor manufacturing equipment with demanding speed and precision requirements
- High-frequency router spindles for composite material processing
