71912 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71912 CE/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
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3668 lbf
Radial static load rating
2655 lbf
Limiting speed
34 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:
$ 545.75
/ each
In Stock
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71912 CE/P4A Bearing Product Overview & Core Advantages
The 71912 CE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to P4 (ABEC-7) tolerance class, this single bearing is preloaded and optimized to handle combined loads, providing superior axial and radial support in a compact design. Its phenolic cage and specific contact angle of 15° contribute to outstanding high-speed performance, making it an ideal choice for high-reliability, precision machinery.
71912 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
The 71912 CE/P4A model number provides detailed technical specifications:
- 71912: Basic model number denoting the bearing dimensions (60mm bore, 85mm OD, 13mm width).
- C: Indicates a 15° contact angle, optimized for high-speed operation.
- E: Signifies a reinforced (high-capacity) internal design.
- P4A: Denotes the P4 (ABEC-7) tolerance class and that the bearing is supplied with a specific preload (A).
71912 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and precise shaft guidance, essential for high-accuracy applications.
- Superior High-Speed Capability: The combination of the 15° contact angle and the lightweight, robust phenolic cage allows for a high limiting speed of 34,000 rpm.
- Optimized Load Capacity: Designed to support combined radial and axial loads simultaneously, with a dynamic load rating of 3668 lbf and a static load rating of 2655 lbf.
- Preload for Enhanced Stability: Supplied with a preload (A), which increases system stiffness, reduces noise and vibration, and improves rotational accuracy.
71912 CE/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors and Spindles
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Instrumentation
