71912 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71912 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.008mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3442 lbf
Limiting speed
24 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 131.67
/ each
In Stock
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71912 CD/P4A Bearing Product Overview & Core Advantages
The 71912 CD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class, this bearing is designed to accommodate high axial loads in one direction and offers superior performance in demanding operational environments. Its compact design, combined with a phenolic resin cage and pre-lubrication, makes it an ideal solution for high-speed spindles and precision machinery where reliability and minimal thermal expansion are critical.
71912 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and optimized internal design for high rigidity and precise axial load capacity. |
| P4A | Specifies the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for high-precision applications. |
71912 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 15° contact angle and P4 tolerance class provide superior axial rigidity and running accuracy, essential for machine tool spindles and other high-precision equipment.
- Optimized Load Capacity: Engineered to handle significant axial loads in one direction while supporting radial loads, with a dynamic load rating of 4478 lbf and static load rating of 3442 lbf.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 24,000 rpm and stable operation at high rotational velocities.
- Pre-Lubricated & Ready-to-Use: Factory-lubricated for immediate installation and optimal performance within a temperature range of -30°C to 110°C.
71912 CD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (high-speed milling, grinding, and turning centers)
- Precision Gearboxes and High-Frequency Motors
- Medical Equipment (dental handpieces, surgical drills)
- Aerospace Actuation Systems and Robotic Joints
