71922 ACD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71922 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 71922 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set duplex pair, it is engineered to handle combined radial and axial loads simultaneously. Its P4A tolerance class and extra light preload (Class A) ensure smooth, quiet operation and high rotational accuracy, making it ideal for high-speed, high-precision machinery where reliability is paramount.
71922 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
- 71922: Basic model number denoting a metric, angular contact bearing series with a 110 mm bore and 150 mm outside diameter.
- AC: Signifies Angular Contact design with a 25° contact angle.
- D: Indicates the bearing is one of a Duplex pair (two bearings).
- P4A: Denotes a very high precision tolerance class, exceeding ABEC 7 standards, for superior running accuracy.
- DGA: Specifies a Universal Matchable (SU) arrangement in a Duplex set with an Extra light preload (Class A).
71922 ACD/P4ADGA Bearing Structural Features & Performance Benefits
The performance of the 71922 ACD/P4ADGA is driven by its meticulous construction. The duplex design, comprising two matched bearings, provides significantly increased rigidity and moment load capacity compared to single bearings. The 25° contact angle is optimized for supporting substantial axial loads in one direction. The phenolic cage offers excellent performance at high speeds, contributing to the bearing's impressive limiting speed of 16,000 rpm. Manufactured to a P4A tolerance class from high-grade chrome steel, this bearing guarantees minimal vibration and exceptional rotational accuracy.
71922 ACD/P4ADGA Bearing Typical Application Areas
This high-precision, high-speed bearing is typically specified in demanding applications such as:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Units
