S7020 ACD/P4AQGA
Sealed Super Precision Angular Contact Ball Bearings
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S7020 ACD/P4AQGA Bearing Product Overview & Core Advantages
The S7020 ACD/P4AQGA is a precision double row angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. Engineered to simultaneously handle combined radial and axial loads from both directions, this bearing features a compact design that saves space while delivering high reliability. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-precision spindles and machinery where minimal runout is critical. The universal matching (SU) designation allows for flexible mounting arrangements in sets, providing designers with versatile configuration options.
S7020 ACD/P4AQGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° contact angle, double row design | Optimized for high axial load capacity and moment loads |
| P4A | ABEC 7 / ISO P4 precision tolerance | Ensures high running accuracy and minimal vibration |
| QGA | Sealed design with grease lubrication | Provides contamination protection and extended service life |
S7020 ACD/P4AQGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact configuration with 25° contact angle provides exceptional stiffness, enabling the bearing to handle significant combined loads including radial, axial, and moment loads. With a radial dynamic load rating of 46,800 lbf and static rating of 72,000 lbf, this bearing delivers robust performance in demanding applications.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures precise shaft positioning and minimal runout. The phenolic cage contributes to smooth operation at high speeds while maintaining dimensional stability.
Sealed & Lubricated Design: The integrated sealing system with grease lubrication provides effective contamination exclusion and long-term lubrication retention. This maintenance-free design operates reliably across a temperature range of -30°C to 110°C, reducing maintenance requirements and total cost of ownership.
Universal Matching Capability: Designated as Universal Matchable (SU), these bearings can be mounted in sets of up to 4 bearings with preload established through proper mounting, offering flexibility in achieving optimal stiffness and precision for specific application requirements.
S7020 ACD/P4AQGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional accuracy and rigidity
- High-Speed Machining Centers: Applications demanding both high rotational speeds and precise positioning
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- Industrial Robotics: Robot arm joints and precision positioning systems
- Medical Equipment: CT scanners, MRI machines, and surgical robotics requiring reliable, precise motion control
- Aerospace Components: Guidance systems, actuator mechanisms, and auxiliary power units
