71901 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71901 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.01 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
486 lbf
Radial static load rating
198 lbf
Limiting speed
137 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:
$ 103.63
/ each
In Stock
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71901 CE/P4A Bearing Product Overview & Core Advantages
The 71901 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to primarily accommodate combined loads (simultaneous radial and axial loads), this bearing features a 15° contact angle for optimal axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. Its compact design, with a 12 mm bore and 6 mm width, provides a high-performance solution in space-constrained applications.
71901 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| C | 15° Contact Angle | Optimized for handling axial loads in one direction. |
| E | Reinforced Design | Features a larger ball complement and optimized internal geometry for increased load rating and rigidity. |
| P4 | Tolerance Class (ABEC-7) | Guarantees extremely tight dimensional and running accuracy for high-precision and high-speed operation. |
| A | Preload Class (Light) | The bearing is supplied with a specified internal preload to eliminate axial play, enhancing system stiffness and rotational accuracy from the moment of installation. |
71901 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and light preload (A) work in concert to provide superior system stiffness and precise shaft positioning, critical for applications demanding minimal deflection.
- Optimized Load Capacity: The 15° contact angle and reinforced "E" design with a full complement of 12 balls enable the bearing to support significant combined radial and one-direction axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at the bearing's high limiting speed of 137,000 rpm, reducing centrifugal forces and heat generation.
- Premium Materials: Constructed from chrome steel for both rings and balls, the bearing offers high hardness, wear resistance, and long-term durability under demanding operating conditions.
71901 CE/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- High-Frequency Spindles in PCB drilling and milling machines
- Precision Grinding Spindles
- High-Speed Machine Tool Axes
- Instrumentation and Medical Device Motors
- Robotic Arm Joints and Drives
