71906 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71906 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.045 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1258 lbf
Radial static load rating
731 lbf
Limiting speed
75 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:
$ 235.63
/ each
In Stock
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71906 CE/HCP4A Bearing Product Overview & Core Advantages
The 71906 CE/HCP4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and superior performance. Positioned in the P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy. Its core advantage lies in its ability to accommodate combined loads, primarily handling substantial axial loads in one direction while also supporting radial loads. The combination of a ceramic ball material and a phenolic resin cage enables outstanding high-speed capabilities and thermal stability, making it an ideal solution for demanding, high-rotation applications.
71906 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71906 | Standard bearing series designation, indicating a high-precision angular contact bearing with a 30mm bore, 47mm OD, and 9mm width. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls for reduced weight, lower friction, and enhanced speed performance. |
| P4 | Denotes the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
| A | Specifies that the bearing is supplied with a light preload for increased rigidity and precise shaft positioning. |
71906 CE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The hybrid ceramic design with silicon nitride balls and a lightweight phenolic resin cage significantly reduces centrifugal forces, enabling a high limiting speed of 75,000 rpm. This combination minimizes heat generation and ensures stable operation at high velocities.
- High Rigidity & Precision: The P4 precision grade and factory-applied preload work in tandem to provide exceptional system stiffness and minimal runout, which is critical for maintaining accuracy in high-speed spindles.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently handle combined loads, with a primary focus on supporting high one-directional axial loads alongside radial loads.
- Thermal & Operational Stability: Ceramic balls have a lower coefficient of thermal expansion than steel, leading to reduced preload variation with temperature changes. The phenolic cage offers excellent dimensional stability and operates smoothly with minimal friction.
71906 CE/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, precision, and rigidity are paramount. Key applications include:
- High-Frequency CNC Spindles
- Precision Grinding Machine Spindles
- High-Speed Machining Centers
- Advanced Dental and Medical Handpieces
- Turbochargers and High-Speed Compressors
