71922 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71922 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71922 CD/P4ADBC is a precision duplex pair of Angular Contact Ball Bearings arranged in a Back-to-Back (DB) configuration. This matched set is engineered to provide exceptional rotational accuracy and high rigidity, making it ideal for applications requiring superior performance under combined radial and axial loads. With a P4A tolerance class and a moderate preload (Class C), this bearing assembly delivers reliable, high-speed operation and precise shaft positioning in demanding environments.
71922 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 71922: Basic model number indicating a light series, 110mm bore angular contact bearing.
- C: Denotes a 15° contact angle, optimized for high-speed applications and moderate axial loads.
- D: Indicates the bearing is part of a Duplex pair.
- P4A: Specifies a very high precision tolerance class, exceeding ABEC 7 standards, for minimal runout and superior running accuracy.
- DB: Defines the Back-to-Back duplex arrangement, which provides high moment rigidity and can accommodate axial loads from both directions.
- C: Specifies a moderate preload (Class C) applied to the duplex set, enhancing stiffness and minimizing axial/radial play.
71922 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The Back-to-Back (DB) duplex arrangement creates a wide, stable support system that significantly increases moment stiffness. This design enables the bearing set to effectively handle combined radial and axial loads simultaneously.
Precision & High-Speed Performance: Manufactured to a P4A tolerance class, this bearing ensures minimal vibration and exceptional running accuracy. The 15° contact angle and phenolic cage contribute to stable operation at high speeds, with a limiting speed of 16,250 rpm.
Optimized Component Design: The use of chrome steel for rings and balls ensures high durability and fatigue resistance. The phenolic cage offers excellent strength-to-weight ratio and smooth operation at high rotational speeds.
71922 CD/P4ADBC Bearing Typical Application Areas
The 71922 CD/P4ADBC is ideally suited for high-precision, high-speed machinery where rigidity and accuracy are paramount. Key applications include:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high precision and rigidity.
- Precision Gearboxes: In applications demanding accurate shaft alignment and minimal deflection.
- High-Frequency Motors and Spindles: Where high rotational speeds and low vibration are critical.
- Industrial Pumps and Compressors: For reliable performance under combined loading conditions.
