71922 CEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71922 CEGA/P4A Bearing Product Overview & Core Advantages
The 71922 CEGA/P4A is a single-row angular contact ball bearing engineered for ultra-precision applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to the stringent P4A tolerance class, this bearing is designed to accommodate primarily axial loads in one direction and combined loads, making it ideal for high-rigidity, high-speed spindles. Its extra light preload (Class A) minimizes deflection under operational loads, ensuring superior running accuracy and extended service life in demanding environments.
71922 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71922 | Bearing series and size designation | Indicates a high-precision angular contact bearing series with a 110 mm bore. |
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| E | Optimized Internal Design | Features enhanced internal geometry for improved performance and load rating. |
| GA | Universal Matchable (SU) with Light Preload | Bearing is one of a universally matchable pair (set of 2) that can be arranged in tandem, back-to-back, or face-to-face configurations to achieve desired rigidity and load capacity. |
| P4A | Tolerance Class | Denotes an ultra-precision bearing with extremely tight dimensional and running accuracy tolerances, superior to ABEC 7/ISO P4. |
71922 CEGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a 15° contact angle and a lightweight, high-strength phenolic resin cage significantly reduces centrifugal forces, enabling stable operation at the high limiting speed of 16,250 rpm.
Exceptional Rigidity and Accuracy: The extra light preload eliminates internal clearance, providing high system rigidity and minimizing axial and radial runout. This is critical for applications requiring extreme positional accuracy.
Superior Load Capacity: The optimized internal design (E) and high-grade chrome steel construction provide a high dynamic and static load rating, reliably handling combined radial and axial loads.
Universal Matching Flexibility: As a Universal Matchable (SU) bearing supplied in a set of two, it offers unparalleled flexibility for designers to create preloaded bearing arrangements (DB, DF, DT) without the need for selective mounting, simplifying installation and ensuring optimal performance.
71922 CEGA/P4A Bearing Typical Application Areas
The 71922 CEGA/P4A is the bearing of choice for the most demanding high-precision, high-speed machinery, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Precision Instrumentation: Rotary encoders, measuring devices, and scientific equipment.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other critical rotational systems.
