S7020 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7020 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S7020 ACD/P4ADGA is a precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a P4A tolerance class bearing, it guarantees ultra-precise dimensions and running accuracy. Its universal matchable (SU) design allows bearings to be mounted in any combination (back-to-back, face-to-face, or tandem) without pre-load loss, providing exceptional flexibility in machine design. This bearing is pre-lubricated with grease and features sealed construction, making it ideal for high-speed operation and applications requiring long-term, maintenance-free performance.
S7020 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Basic bearing series and size designation (100mm bore, 150mm OD) |
| ACD | Double Row Angular Contact Design with a 25° contact angle |
| P4A | High Precision Tolerance Class (superior to ABEC 7) |
| DGA | Sealed bearing, pre-lubricated with grease |
S7020 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides superior radial and axial stiffness, enabling the bearing to withstand combined loads (simultaneous radial and axial forces) from both directions. With a dynamic load rating of 28,575 lbf and static load rating of 36,000 lbf, it offers robust performance in demanding applications.
Optimized High-Speed Performance: The phenolic resin cage ensures low friction, reduced weight, and excellent acceleration characteristics, contributing to the high limiting speed of 16,250 rpm. The 25° contact angle provides an optimal balance between radial and axial load capacity for high-speed operation.
Maintenance-Free Operation: As a sealed and pre-lubricated unit, the bearing is protected from contamination and retains lubrication throughout its service life. This sealed construction eliminates the need for re-lubrication, reducing maintenance requirements and total cost of ownership.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for ultra-precise positioning applications.
S7020 ACD/P4ADGA Bearing Typical Application Areas
The S7020 ACD/P4ADGA is ideally suited for precision machinery and high-performance equipment including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Speed Industrial Pumps & Compressors
- Precision Gearboxes & Transmission Systems
- Medical Equipment & Laboratory Instruments
- Robotics & Automation Systems
