7020 ACDG/P4AG69
7000 Series Super Precision Angular Contact Ball Bearings
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7020 ACDG/P4AG69 Bearing Product Overview & Core Advantages
The 7020 ACDG/P4AG69 is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing features P4A super precision tolerance and is universally matchable (SU designation), allowing for flexible mounting arrangements in pairs. Its phenolic resin cage and optimized 25° contact angle deliver superior high-speed performance and stability, making it ideal for demanding industrial environments.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7020 | Basic bearing designation | Standard metric size (100mm bore × 150mm OD × 24mm width) |
| AC | Angular Contact | Optimized for combined radial and axial loads |
| DG | Universal Matchable (SU) | Can be paired in any configuration (face-to-face, back-to-back, or tandem) |
| P4A | Super Precision Tolerance | Exceeds ABEC 7 standards for extreme running accuracy |
| G69 | Preload Class | Specific internal clearance for optimal stiffness and positioning |
7020 ACDG/P4AG69 Bearing Structural Features & Performance Benefits
High Rigidity & Precision: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration. The 25° contact angle provides optimal axial load capacity while maintaining radial load performance.
Superior High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and reduced friction, enabling limiting speeds up to 16,000 rpm. Combined with 22 precision-ground chrome steel balls (15.875mm diameter), this bearing delivers smooth operation at high rotational velocities.
Enhanced Load Capacity: With dynamic load rating of 17,842 lbf and static load rating of 18,000 lbf, this bearing reliably handles significant combined loads in demanding applications.
Universal Matching Capability: The SU (Universal Matchable) designation allows for flexible arrangement of two bearings in matched sets, enabling customized preload and stiffness characteristics for specific application requirements.
7020 ACDG/P4AG69 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Robotic Systems: Industrial robot arms, precision positioning systems
- Aerospace Components: Aircraft instrumentation, guidance systems, and auxiliary power units
- Medical Equipment: Dental handpieces, laboratory centrifuges, and diagnostic imaging systems
- Semiconductor Manufacturing: Wafer handling equipment, precision positioning stages
