71924 CEGB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71924 CEGB/P4A Bearing Product Overview & Core Advantages
The 71924 CEGB/P4A is a single row angular contact ball bearing designed for applications demanding high precision and superior running accuracy. Manufactured to P4A tolerance class, this bearing excels in scenarios requiring exceptional dimensional stability and minimal rotational runout. Its 15° contact angle is optimized to support significant combined loads, handling both radial and axial loads simultaneously. The phenolic cage and universal matchable (SU) design contribute to its high-speed capability and versatility in preloaded arrangements, making it an ideal choice for high-performance spindles and precision machinery.
71924 CEGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71924 | Basic bearing designation, indicating a single row angular contact ball bearing with a 120mm bore and specific dimensions. |
| C | Designates a 15° contact angle. |
| E | Indicates an optimized internal design for enhanced load capacity and performance. |
| GB | Specifies a Light preload / Class B. |
| P4A | Denotes a high precision tolerance class with very tight dimensional and running accuracy limits. |
71924 CEGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class ensures extremely tight dimensional control (bore and OD tolerance: -0.004mm to 0), providing superior rotational accuracy and system rigidity for demanding applications.
- Optimized Load Capacity: The 15° contact angle and optimized internal geometry enable the bearing to efficiently support combined radial and axial loads, with a dynamic load rating of 10,688 lbf and a static load rating of 9,000 lbf.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 10,000 rpm. The open design and standard lubrication facilitate efficient heat dissipation.
- Universal Matching: The Universal Matchable (SU) designation means bearings can be universally paired in any combination to form preloaded sets (2 bearings in a matched set), simplifying inventory and assembly for duplex arrangements.
- Material Quality: Components made from chrome steel offer high hardness, wear resistance, and durability for long service life.
71924 CEGB/P4A Bearing Typical Application Areas
The 71924 CEGB/P4A is engineered for high-precision, high-speed machinery. Its primary applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Industrial Pumps and Compressors: Where high rotational accuracy and reliability are critical.
- Robotics and Automation: High-precision joints and rotary axes.
