71922 ACD/P4ATBTB
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71922 ACD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
2.58 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
60 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
28575 lbf
Radial static load rating
45900 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71922 ACD/P4ATBTB Bearing Product Overview & Core Advantages
The 71922 ACD/P4ATBTB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This bearing is supplied as a triplex back-to-back (TBT) matched set, enabling it to handle significant combined loads—simultaneous radial and axial loads—with high stability. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy and is preloaded for immediate, precise operation. Its optimized design, featuring a 25° contact angle and phenolic cage, makes it an ideal solution for high-speed and high-precision machinery.
71922 ACD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation. |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class for superior dimensional and running accuracy. |
| TBT | Specifies a Triplex Back-to-Back matched arrangement of three bearings. |
71922 ACD/P4ATBTB Bearing Structural Features & Performance Benefits
- High Rigidity and Stability: The triplex back-to-back (TBT) arrangement creates a highly rigid bearing system that effectively resists moment loads and maintains shaft positioning under heavy combined loads.
- Superior Load Capacity: The angular contact design with a 25° contact angle is optimized to support high radial loads and substantial axial loads in one direction.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the P4A precision grade ensures smooth operation, contributing to a high limiting speed of 10,000 rpm.
- Precision and Reliability: Manufactured to P4A tolerances with a light preload (Class B), this set guarantees minimal runout and immediate high-performance operation without the need for initial adjustment.
71922 ACD/P4ATBTB Bearing Typical Application Areas
This precision bearing set is engineered for the most demanding applications, including:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-frequency Precision Spindles
- High-performance Pumps and Compressors
- Advanced Robotic and Automation Systems
