71922 CD/P4ADT
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71922 CD/P4ADT
Basic Information
System of measurement
Metric
Weight
1.72 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
40 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
22725 lbf
Radial static load rating
32175 lbf
Limiting speed
16.25 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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71922 CD/P4ADT Bearing Product Overview & Core Advantages
The 71922 CD/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex tandem (DT) arrangement consists of two matched bearings preloaded against each other, delivering superior axial load capacity in one direction. Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-precision, high-speed spindles. Its open design allows for optimized lubrication flow, contributing to its impressive limiting speed of 16,250 rpm.
71922 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
The model number 71922 CD/P4ADT is decoded as follows:
- 71922: Basic designation for a high-precision angular contact ball bearing series with a 110 mm bore and 150 mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed applications with predominant axial loads.
- D: Indicates the bearing is supplied as part of a duplex matched set.
- P4A: Specifies the tolerance class, indicating very high precision levels for dimensional and running accuracy.
- DT: Signifies the Duplex Tandem arrangement, where two bearings are mounted together to increase axial load capacity in a single direction.
71922 CD/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle create an exceptionally rigid setup capable of handling high axial loads. The matched set ensures preload is maintained for precise shaft positioning.
- High-Speed Performance: The phenolic resin cage offers low mass and excellent high-speed stability, enabling operation at the specified limiting speed of 16,250 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring smooth, quiet, and accurate operation.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, contributing to a long service life under demanding conditions.
71922 CD/P4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling, semiconductor manufacturing, and other high-accuracy processes.
- High-Frequency Motors and Turbocharger Shafts.
