71912 ACE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71912 ACE/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
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3442 lbf
Radial static load rating
2475 lbf
Limiting speed
30 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:
$ 545.56
/ each
In Stock
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71912 ACE/P4A Bearing Product Overview & Core Advantages
The 71912 ACE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single-row bearing, it is engineered to accommodate primarily axial loads in one direction and combined loads. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery. The phenolic cage and optimized internal geometry contribute to its high-speed performance and smooth operation.
71912 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71912 | Basic bearing series and size designation (60mm bore, 85mm OD, 13mm width). |
| ACE | Internal design code indicating a 25° contact angle and optimized internal geometry for high-speed operation. |
| P4A | Denotes a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements for precision applications. |
71912 ACE/P4A Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: Manufactured to P4 tolerance class with a 25° contact angle, this bearing provides excellent rotational accuracy and stiffness, which is critical for minimizing deflection under load.
- Superior High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces and ensures stable operation at the high limiting speed of 30,000 rpm. The open design facilitates efficient lubrication management.
- Optimized Load Capacity: The angular contact design is engineered to handle high axial loads in one direction and combined (radial and axial) loads effectively, with a dynamic load rating of 3442 lbf.
- Pre-Configured for Performance: The bearing is supplied lubricated and is available with preload, allowing for immediate installation in applications requiring defined axial stiffness and minimal runout.
71912 ACE/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
