71912 CE/P4ADT
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71912 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.38 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5962 lbf
Radial static load rating
5310 lbf
Limiting speed
31 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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71912 CE/P4ADT Bearing Product Overview & Core Advantages
The 71912 CE/P4ADT is a precision angular contact ball bearing configured in a duplex tandem (DT) arrangement. This matched pair is engineered to deliver exceptional performance in applications requiring high rigidity and the ability to accommodate significant axial loads in one direction. Manufactured to the exacting P4A tolerance class, it offers superior running accuracy, making it ideal for high-speed spindles and other precision machinery where uncompromising reliability is paramount.
71912 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing designation, indicating a high-precision angular contact bearing series with a 60 mm bore, 85 mm OD, and 26 mm width. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| P4A | Denotes the tolerance class, signifying very high precision levels for both dimensional and running accuracy. |
| DT | Signifies a Duplex Tandem preloaded arrangement. Two bearings are mounted together to increase axial stiffness and load capacity in a single direction. |
71912 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex tandem (DT) arrangement combines two bearings to create an exceptionally rigid setup capable of supporting high axial loads in one direction, making it superior to single bearings for thrust applications.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a 15° contact angle and a lightweight phenolic cage, this bearing is engineered for smooth operation at high rotational speeds, with a limiting speed of 31,000 rpm.
- Optimized Material & Design: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue resistance. The open design allows for optimized lubrication management within the system.
- Preload & Matched Set: Supplied as a preloaded matched set of 2 bearings, ensuring immediate optimal performance, simplified installation, and consistent operational characteristics.
71912 CE/P4ADT Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Spindles in PCB drilling and routing machines
- High-Frequency Motors
- Axial Compressors and Pumps
- Other precision machinery requiring high rigidity and uncompromising accuracy.
