71906 FE/HCP4AH
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71906 FE/HCP4AH
Basic Information
System of measurement
Metric
Weight
0.045 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1258 lbf
Radial static load rating
720 lbf
Limiting speed
72.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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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71906 FE/HCP4AH Bearing Product Overview & Core Advantages
The 71906 FE/HCP4AH is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered to accommodate combined radial and axial loads simultaneously, this bearing features a single-row design with a 15° contact angle for optimal load distribution. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other precision machinery. The combination of a ceramic ball material and a phenolic cage contributes to its superior high-speed capabilities and reduced rotational mass.
71906 FE/HCP4AH Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| FE | Preload (Light) | Provides controlled internal clearance for enhanced rigidity and precise shaft positioning. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduces friction, increases limiting speed, and provides superior performance in high-temperature or electrically sensitive environments. |
| P4A | Tolerance Class (ABEC 7 / ISO P4) | Guarantees extremely tight dimensional and running accuracy for applications requiring minimal runout and vibration. |
71906 FE/HCP4AH Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class and application of a light preload (FE) ensure minimal deflection under load, providing exceptional stiffness for precise machining and positioning.
- Superior High-Speed Performance: The use of ceramic balls significantly lowers centrifugal forces and friction, while the lightweight phenolic resin cage offers excellent dimensional stability at high rotational speeds, enabling a high limiting speed of 72,500 rpm.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently handle combined loads, making it suitable for applications with significant axial thrust in addition to radial forces.
- Extended Service Life: The hybrid ceramic design provides increased hardness and reduced wear compared to all-steel designs, leading to longer operational life and consistent performance.
71906 FE/HCP4AH Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and spindle drives requiring high accuracy and rigidity.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational speeds are critical.
- Medical and Dental Equipment: High-speed handpieces and diagnostic scanners.
- Aerospace Instrumentation: Gyroscopes and other precision navigation systems.
