S71922 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71922 ACD/P4A Bearing Product Overview & Core Advantages
The S71922 ACD/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to support combined loads, efficiently carrying significant radial loads and thrust loads in one direction simultaneously. The combination of a 25° contact angle, a phenolic cage, and factory-applied lubrication makes it an ideal choice for high-speed operation and high-reliability scenarios where precision and stiffness are paramount.
S71922 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7 | Series designation for high-precision angular contact bearings | Indicates a bearing designed for superior performance and precision. |
| 1922 | Standard size code (Bore: 110mm, OD: 150mm, Width: 20mm) | Defines the critical bearing dimensions for fit and assembly. |
| ACD | Contact angle of 25° | Optimized for high thrust load capacity and high rigidity. |
| P4A | Tolerance class P4 (ABEC-7), with specific running accuracy limits | Ensures extremely low vibration and noise for precision bearing applications. |
S71922 ACD/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls provide high resistance to deformation under load. This design enables the bearing to handle significant combined loads with high system rigidity.
High-Speed Performance: The lightweight and durable phenolic cage minimizes centrifugal forces and friction, contributing directly to the high limiting speed of 7,500 rpm. This makes it an excellent high-speed bearing.
Pre-optimized for Precision: The P4 tolerance class guarantees tight control over all bearing dimensions and internal geometry, resulting in exceptional running accuracy, reduced vibration, and predictable performance.
Ready-to-Install: The bearing is lubricated from the factory and sealed, protecting it from contamination during handling and simplifying installation.
S71922 ACD/P4A Bearing Typical Application Areas
The S71922 ACD/P4A is engineered for demanding applications where precision, speed, and reliability are non-negotiable. Typical uses include:
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
