71901 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71901 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.009 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
165 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 103.7
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71901 CE/HCP4A Bearing Product Overview & Core Advantages
The 71901 CE/HCP4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Engineered to withstand combined loads (radial and axial), this single bearing features a 15° contact angle for optimal axial load capacity. Its ceramic balls and P4 (ABEC-7) tolerance class ensure minimal vibration and superior running precision, making it ideal for high-reliability, high-speed machinery where rigidity and accuracy are paramount.
71901 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates the use of ceramic balls (typically Silicon Nitride, Si3N4), which reduce centrifugal forces, lower operating temperatures, and enable higher speeds. |
| HC | Refers to a phenolic resin cage, which is lightweight and provides excellent dimensional stability at high speeds, contributing to the bearing's limiting speed. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7) with specific internal running accuracy enhancements for superior performance in precision applications. |
71901 CE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of ceramic balls and a lightweight phenolic cage (HC) significantly reduces centrifugal forces and inertial mass, enabling the bearing to achieve its high limiting speed of 165,000 rpm.
- Precision & Rigidity: Manufactured to P4 tolerance standards, this bearing ensures minimal runout and consistent performance. The 15° contact angle provides a robust design for handling combined loads with high rigidity.
- Preload & Temperature Performance: The bearing is supplied with preload, enhancing system stiffness and rotational accuracy from the start. The ceramic balls also exhibit lower thermal expansion, maintaining performance across the specified temperature range (-30° to 110°C).
- Long Service Life: The open seal type allows for efficient lubrication management, while the high-grade materials (chrome steel rings, ceramic balls) ensure excellent durability and wear resistance under demanding conditions.
71901 CE/HCP4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers and precision grinders
- Turbochargers and other high-RPM automotive/aerospace systems
- Dental Handpieces and medical drill motors
- High-Frequency Motors and precision robotics
