71924 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71924 CE/P4A Bearing Product Overview & Core Advantages
The 71924 CE/P4A is a single-row angular contact ball bearing designed for applications requiring exceptional precision and high-speed performance. Engineered to P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant combined loads, primarily thrust loads in one direction, making it ideal for high-rigidity, high-reliability applications. Its phenolic cage and pre-lubrication contribute to its superior high-speed capabilities and smooth operation.
71924 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71924 | Basic bearing series and size designation (120mm bore, 165mm OD, 22mm width). |
| C | Designates a 15° contact angle, optimized for high-speed operation and thrust load capacity. |
| E | Indicates optimized internal geometry and enhanced design for higher performance. |
| P4 | Specifies the high precision tolerance class (equivalent to ABEC-7), ensuring minimal runout and vibration. |
| A | Signifies that the bearing is supplied with a specific preload for immediate high-rigidity performance. |
71924 CE/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The P4 tolerance class and available preload ensure minimal deflection under load, providing exceptional rotational accuracy and system stability. This is critical for applications where shaft positioning is paramount.
High-Speed Capability: The combination of the lightweight, high-strength phenolic resin cage and the 15° contact angle minimizes centrifugal forces and friction, enabling a high limiting speed of 16,000 rpm.
Superior Load Capacity: Engineered with a dynamic load rating of 10,688 lbf and a static load rating of 9,000 lbf, this bearing reliably handles significant radial and one-directional thrust loads.
Optimized for Performance: The use of high-grade chrome steel for rings and balls, along with precision-ground raceways, ensures long service life and consistent performance under demanding conditions.
71924 CE/P4A Bearing Typical Application Areas
The 71924 CE/P4A is ideally suited for high-performance machinery where precision and speed are critical. Common applications include:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Aerospace Actuation Systems
