71924 CEGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71924 CEGA/P4A Bearing Product Overview & Core Advantages
The 71924 CEGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Positioned in the P4A super-precision tolerance class, it is designed to handle combined loads, primarily thrust loads, with high reliability. Its compact design, featuring a phenolic cage and universal matching capability, makes it ideal for high-speed spindles and other precision machinery where minimal runout and superior performance are critical.
71924 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71924 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 120mm bore, 165mm OD, and 22mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high thrust load capacity. |
| EGA | Indicates a universally matchable (SU) bearing supplied in a set of two. These bearings can be mounted in any combination (back-to-back, face-to-face, or tandem) to achieve the required stiffness and load capacity. |
| P4A | Denotes an ultra-high precision tolerance class with extremely tight dimensional and running accuracy tolerances, surpassing standard ABEC 7/P4 levels. |
71924 CEGA/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and friction, enabling stable operation at the high limiting speed of 10,000 rpm. The optimized 15° contact angle further enhances high-speed performance.
Superior Rigidity & Load Capacity: As an angular contact bearing, it is designed to support significant combined (radial and axial) loads simultaneously. The universal matching (SU) design allows for the creation of preloaded bearing sets, dramatically increasing system rigidity and moment load capacity.
Ultra-Precision Operation: Manufactured to P4A tolerance class standards, this bearing ensures minimal runout and vibration, which is critical for achieving the highest levels of machining and positioning accuracy.
Optimized Material Selection: Constructed from high-grade chrome steel for both rings and balls, providing excellent wear resistance and long service life under demanding conditions.
71924 CEGA/P4A Bearing Typical Application Areas
The 71924 CEGA/P4A is predominantly used in high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Robotic Drives and Rotary Tables
- Aerospace & Defense Instrumentation
- Medical Equipment such as high-speed dental handpieces and imaging devices
