71922 ACD/P4ATBTC
71900 Series Super Precision Angular Contact Ball Bearings
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71922 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 71922 ACD/P4ATBTC is a metric system triplex angular contact ball bearing designed for applications requiring exceptional precision and rigidity. This P4A tolerance class bearing features a back-to-back arrangement (TBT) of three matched bearings, delivering superior stiffness and the ability to handle complex combined loads including significant radial and axial forces. With its moderate preload (Class C) and phenolic cage, it is engineered for high-speed operation up to 10,000 rpm, making it ideal for ultra-precise, high-performance machinery.
71922 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class for dimensional and running accuracy. |
| TBT | Specifies the Triplex Back-to-Back matched arrangement of three bearings. |
| C | Denotes a Moderate preload applied to the bearing set for optimal rigidity. |
71922 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
Optimized Rigidity and Load Capacity: The triplex back-to-back configuration creates a highly rigid bearing system that effectively resists moment loads. This setup, combined with a 25° contact angle and 28 high-precision chrome steel balls, provides a high dynamic load rating of 28,575 lbf and static load rating of 45,900 lbf for demanding applications.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, enabling stable operation at the limiting speed of 10,000 rpm. The open design and factory lubrication ensure efficient heat dissipation and smooth running.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing guarantees exceptional running accuracy and system repeatability.
71922 ACD/P4ATBTC Bearing Typical Application Areas
- High-Precision Machine Tool Spindles for grinding, milling, and turning centers
- High-Speed Robotic Arms and Actuators
- Precision Gearboxes and Transmission Systems
- Advanced Medical and Laboratory Equipment
- Aerospace Actuation and Control Systems
