S71920 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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S71920 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S71920 ACD/P4ADGA is a precision double-row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4A tolerance class, it excels in handling combined radial and axial loads simultaneously. Its compact design, featuring a universal matchable (SU) configuration, allows for simplified mounting and high system rigidity. Preloaded to an extra-light (Class A) specification, this bearing is optimized for high-speed operation and high-reliability scenarios where minimal deflection is critical.
S71920 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° Contact Angle, Double-Row Design | Optimized for high axial load capacity and rigidity. |
| P4A | High Precision Tolerance Class | Ensures superior running accuracy and minimal vibration for precision applications. |
| DGA | Sealed, Grease Lubricated | Provides maintenance-free operation by retaining lubricant and excluding contaminants. |
S71920 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row angular contact design and 25° contact angle provide superior stiffness, enabling the bearing to support significant combined loads (radial and bidirectional axial) with minimal deformation.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards and featuring a lightweight phenolic cage, the bearing achieves smooth operation and a high limiting speed of 10,000 rpm, making it a true high-speed bearing.
- Long Service Life & Reliability: The combination of chrome steel rings and balls, along with a sealed and grease-lubricated design, ensures consistent performance, reduced friction, and extended service intervals in a wide temperature range from -30°C to 110°C.
- Simplified Installation: The Universal Matchable (SU) designation means bearings are universally interchangeable, simplifying mounting and preload setting in pairs for optimal system performance.
S71920 ACD/P4ADGA Bearing Typical Application Areas
The S71920 ACD/P4ADGA is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Instrumentation
