71902 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71902 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.015 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.005mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
718 lbf
Radial static load rating
308 lbf
Limiting speed
115 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:
$ 133.07
/ each
In Stock
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71902 CE/P4A Bearing Product Overview & Core Advantages
The 71902 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class, this bearing is engineered to handle combined loads, with a primary capacity for thrust loads in one direction. Its compact design, featuring a 15 mm bore and 7 mm width, makes it ideal for space-constrained, high-speed spindles and precision instruments where minimal deflection and high running accuracy are critical.
71902 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| CE | High-capacity, optimized internal geometry with a 15° contact angle. | Enhances thrust load capacity and provides superior high-speed performance. |
| P4A | Dimensional and running accuracy to P4 (ABEC-7) tolerance class. | Guarantees high precision, low vibration, and minimal runout for demanding applications. |
71902 CE/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4 tolerance class and phenolic resin cage ensure exceptional dimensional stability and low vibration, contributing to high system rigidity and positional accuracy.
- Optimized Load Capacity: The 15° contact angle and high-grade chrome steel construction are designed to efficiently handle significant axial loads in one direction while supporting radial loads.
- Superior High-Speed Performance: The lightweight and robust phenolic cage, combined with optimized internal geometry, enables a high limiting speed of 115,000 rpm, making it suitable for very high-speed applications.
- Pre-lubricated for Immediate Operation: The bearing comes pre-lubricated, ensuring smooth initial operation and protection during run-in, suitable for the specified temperature range of -30°C to 110°C.
71902 CE/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles requiring extreme accuracy.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Speed Motors and Drives: Servo motors, high-frequency spindles, and robotics.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical control mechanisms.
