71924 CB/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71924 CB/P4A
Basic Information
System of measurement
Metric
Weight
1.27 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
165 mm
Outside diameter tolerance
-0.01mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
41
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
6862 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1649.09
/ each
In Stock
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71924 CB/P4A Bearing Product Overview & Core Advantages
The 71924 CB/P4A is a single-row angular contact ball bearing designed for applications requiring exceptional precision and high-speed performance. Manufactured to P4 (ABEC-7) tolerance class, this bearing delivers superior running accuracy. Its key advantage lies in its ability to accommodate combined loads—significant radial loads and unidirectional axial loads—simultaneously. The 15° contact angle is optimized for high-speed operation, while the availability of preload ensures high system rigidity and precise shaft positioning, making it ideal for high-reliability, precision machinery.
71924 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71924 | Basic bearing series and size designation. |
| CB | Specific internal design and contact angle of 15°. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements. |
71924 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with the option for preload, provides high axial and radial rigidity, minimizing deflection under load for superior positional accuracy.
- Superior Load Capacity: Engineered to handle combined loads effectively. The radial dynamic load rating of 6075 lbf and static load rating of 6862 lbf ensure reliable performance in demanding applications.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and stable operation at the high limiting speed of 16,000 rpm. The 15° contact angle further enhances high-speed capability.
- Premium Material Construction: Rings and balls made from chrome steel provide high hardness, wear resistance, and long service life under high-stress conditions.
71924 CB/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace and Defense Actuation Systems
