71902 FE/HCPA9AHDT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71902 FE/HCPA9AHDT
Basic Information
System of measurement
Metric
Weight
0.026 kg
Tolerance class
PA9A
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
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1170 lbf
Radial static load rating
608 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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71902 FE/HCPA9AHDT Bearing Product Overview & Core Advantages
The 71902 FE/HCPA9AHDT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement bearing set is preloaded and ready for installation, offering superior high rigidity and the ability to handle significant combined loads. Manufactured with a ceramic ball and phenolic cage, it is engineered for high-speed operation and extended service life in precision machinery.
71902 FE/HCPA9AHDT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71902 | Basic bearing designation, indicating a light series, 15mm bore diameter. |
| FE | Precision enhancement code, signifying optimized internal geometry for high performance. |
| HC | Hybrid Ceramic, indicating the rolling elements are ceramic balls. |
| PA9A | High precision tolerance class (equivalent to ABEC 9), ensuring minimal runout and vibration. |
| H | Preload designation. |
| DT | Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity in one direction. |
71902 FE/HCPA9AHDT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 18° contact angle create a highly rigid system capable of supporting high combined radial and axial loads in one direction.
- Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 95,000 rpm. This makes it an ideal high-speed bearing.
- Precision & Accuracy: The PA9A tolerance class guarantees exceptional dimensional accuracy and rotational precision, which is critical for applications requiring minimal runout.
- Preloaded & Ready-to-Install: Supplied as a preloaded set, this simplifies installation and ensures optimal performance is achieved immediately, eliminating the need for complex adjustment procedures.
71902 FE/HCPA9AHDT Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- High-Frequency Spindles for CNC machining centers and PCB drilling machines
- Precision Grinding Spindles
- High-speed Dental and Medical Handpieces
- Turbochargers and other high-rotational-speed machinery
- Advanced Robotic Drives and servo motors
