7020 ACDGA/P4AL
7000 Series Super Precision Angular Contact Ball Bearings
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7020 ACDGA/P4AL Bearing Product Overview & Core Advantages
The 7020 ACDGA/P4AL is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and reliability. Manufactured to P4A tolerance class with an extra light preload (Class A), this bearing delivers superior running precision and minimal vibration. Its 25° contact angle and universal matching capability (SU) enable optimal performance under combined radial and axial loads. The phenolic cage and precision-ground chrome steel components ensure stable operation at high speeds up to 16,000 rpm, making it ideal for machine tool spindles and other demanding equipment.
7020 ACDGA/P4AL Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Standard bore diameter 100 mm, outside diameter 150 mm, width 24 mm |
| AC | Angular Contact design with 25° contact angle |
| DGA | Universal Matchable bearing (can be paired in any combination) |
| P4A | High precision tolerance class with specific running accuracy requirements |
| L | Light preload for reduced vibration and enhanced positioning accuracy |
7020 ACDGA/P4AL Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
High-Speed Capability: The phenolic resin cage and optimized 15.875 mm ball diameter with 22 balls enable stable operation at limiting speeds of 16,000 rpm, reducing centrifugal forces and heat generation.
Superior Load Capacity: With radial dynamic load rating of 17,842 lbf and static load rating of 18,000 lbf, the bearing handles significant combined loads while maintaining precision.
Thermal Stability: The phenolic cage material provides excellent dimensional stability across the operating temperature range of -30°C to 110°C.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired in any combination without special selection, simplifying installation and maintenance.
7020 ACDGA/P4AL Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding machines
- Precision Instrumentation: Measuring equipment and optical devices
- High-Speed Motors: Spindle motors and high-frequency applications
- Medical Equipment: CT scanners and dental handpieces
- Aerospace Systems: Guidance systems and precision actuators
