S7020 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S7020 ACDGB/P4A Bearing Product Overview & Core Advantages
The S7020 ACDGB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. This single-row bearing features a 25° contact angle and is manufactured to P4A tolerance class for superior running precision. Its core strength lies in its ability to handle combined loads, particularly high axial loads in one direction, while maintaining high rigidity and stable performance at elevated speeds. The phenolic cage and preloaded Universal Matchable (SU) design make it ideal for high-precision spindles and other critical machinery.
S7020 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| AC | Angular Contact | Optimized for combined radial and axial loads |
| DGB | Universal Matchable (SU designation), Light Preload (Class B) | Enables precise bearing arrangement with minimal axial play |
| P4A | High Precision Tolerance Class | Superior running accuracy and reduced vibration |
S7020 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The 25° contact angle and robust construction provide excellent resistance to deformation under load, enabling the bearing to handle significant axial loads while maintaining system stiffness.
High-Speed Performance: The phenolic cage offers low mass and excellent sliding properties, contributing to the high limiting speed of 16,250 rpm. This makes it suitable for demanding high-speed applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore diameter (100 mm), outside diameter (150 mm), and width (24 mm), ensuring predictable performance and easy installation.
Optimized Internal Geometry: With 22 precision balls of 15.875 mm diameter and chrome steel construction, the bearing delivers high dynamic load rating (17,842 lbf) and long service life.
S7020 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- Precision Gearboxes: Industrial drives requiring high axial stiffness
- High-Speed Motors: Electric motors and generators operating at elevated speeds
- Medical Equipment: CT scanners and other diagnostic imaging systems
- Aerospace Components: Flight control systems and auxiliary power units
