71922 CB/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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71922 CB/P4A Bearing Product Overview & Core Advantages
The 71922 CB/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. This P4 (ABEC-7) tolerance class bearing is preloaded, enabling it to handle significant combined loads (radial and axial) simultaneously with minimal deflection. Its compact design, featuring a 110 mm bore and 20 mm width, makes it an ideal choice for high-speed spindles and other precision machinery where space is at a premium and high rigidity is paramount.
71922 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation. |
| CB | Specific internal design with a 15° contact angle and modified internal clearances/race curvatures for optimized performance. |
| P4 | Indicates a high-precision tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy. |
| A | Signifies that the bearing is supplied with a specific preload to increase system rigidity and minimize axial and radial runout. |
71922 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row angular contact design, combined with a P4 tolerance class and factory-applied preload, provides superior shaft positioning accuracy and resistance to operational deflection under combined loads.
- Optimized Load Capacity: The 15° contact angle is engineered to support substantial axial loads in one direction while also accommodating radial loads, making it suitable for applications with defined load paths.
- High-Speed Capability: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing to a high limiting speed of 17,000 rpm. The open design facilitates efficient lubrication management.
- Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance, ensuring long-term reliability in demanding conditions.
71922 CB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Actuation Systems
