S71922 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
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S71922 ACEGA/P4A Bearing Product Overview & Core Advantages
The S71922 ACEGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and superior running accuracy. Operating under the stringent P4A tolerance class, this bearing is designed to accommodate combined loads, primarily thrust loads in one direction, while offering exceptional rotational stability. Its extra light preload (Class A) minimizes deflection under operational stresses, making it ideal for high-speed spindles and precision machinery where minimal runout and maximum rigidity are critical.
S71922 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S | Designates a universal matching bearing, allowing for precise preload setting when mounted with other bearings. |
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width). |
| AC | Indicates a 25° contact angle, optimized for high thrust load capacity. |
| EGA | Specifies the extra light preload (Class A) and universal matching capability (SU). |
| P4A | Denotes an ultra-precision tolerance class with enhanced dimensional and running accuracy. |
S71922 ACEGA/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A tolerance standards with extremely tight bore, outer diameter, and width tolerances, ensuring exceptional dimensional stability and minimal vibration.
Optimized Load Capacity: The 25° contact angle and high-grade chrome steel components provide excellent resistance to thrust loads and moderate radial loads.
High-Speed Capability: The lightweight phenolic resin cage and precision-ground chrome steel balls contribute to low friction and a high limiting speed of 10,000 rpm.
Sealed & Pre-Lubricated: The sealed design with factory-applied grease lubrication protects against contamination and provides reliable operation within a temperature range of -30°C to 110°C.
Universal Matching: As a Universal Matchable (SU) bearing, it can be precisely paired with other bearings in sets (typically 3) to achieve specific preload and stiffness requirements.
S71922 ACEGA/P4A Bearing Typical Application Areas
The S71922 ACEGA/P4A is ideally suited for high-performance applications requiring extreme precision and speed, including:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-Speed Robotic Drives
- Precision Medical Equipment (dental handpieces, imaging systems)
- Aerospace Actuation Systems
- High-Frequency Electric Motors
