71801 CD/HCP4
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71801 CD/HCP4
Basic Information
System of measurement
Metric
Weight
0.006 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
21 mm
Outside diameter tolerance
-0.005mm to 0
Width
5 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
468 lbf
Radial static load rating
266 lbf
Limiting speed
130 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:
$ 145.78
/ each
In Stock
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71801 CD/HCP4 Bearing Product Overview & Core Advantages
The 71801 CD/HCP4 is a single-row angular contact ball bearing engineered for ultra-high precision and high-speed applications. Its design is optimized to support combined loads, primarily handling significant axial loads in one direction alongside radial loads. Key advantages include its P4 (ABEC-7) tolerance class for exceptional running accuracy, a ceramic ball and phenolic cage combination for superior high-speed performance, and the availability of preload for enhanced system rigidity. This compact bearing is ideal for applications demanding maximum precision and reliability.
71801 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71801 | Basic bearing series and size designation (12mm bore, 21mm OD, 5mm width). |
| CD | Indicates a 15° contact angle and a specific internal design optimized for high stiffness and speed. |
| HC | Signifies the use of Hybrid Ceramic balls, offering reduced weight, lower friction, and higher limiting speeds. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7, ensuring ultra-precise dimensions and runout for critical applications. |
71801 CD/HCP4 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces and friction, enabling a very high limiting speed of 130,000 rpm. This makes it an ideal high-speed bearing.
- High Rigidity & Precision: Manufactured to a P4 tolerance class, this bearing provides exceptional running accuracy and dimensional stability. The availability of preload further increases system stiffness, minimizing deflection under load.
- Optimized Load Capacity: The 15° contact angle is designed to efficiently support combined loads, with a high thrust capacity in one direction. The dynamic and static load ratings are optimized for its compact bearing dimensions.
- Temperature & Lubrication: Pre-lubricated and capable of operating within a temperature range of -30°C to 110°C, it is suited for a wide array of precision machinery environments.
71801 CD/HCP4 Bearing Typical Application Areas
This precision angular contact bearing is specifically designed for high-performance equipment, including:
- High-Frequency Spindles for PCB drilling and precision machining
- Turbochargers and auxiliary high-speed rotors
- Precision Instrumentation and optical scanners
- Dental Handpieces and medical drill motors
- High-Speed Automation robots and direct-drive motors
