71906 CE/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71906 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.05 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
63 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 235.82
/ each
In Stock
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71906 CE/P4A Bearing Product Overview & Core Advantages
The 71906 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees minimal runout and superior performance in demanding environments. The bearing is preloaded and pre-lubricated, making it ready for immediate installation and ensuring consistent performance from the outset.
71906 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| CE | Contact angle of 15° | Optimized for handling a combination of radial and axial loads. |
| P4A | P4 (ABEC-7) tolerance class | Delivers extremely high running accuracy and low vibration for precision applications. |
71906 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and P4 precision provides high rigidity and accurate shaft guidance, minimizing deflection under load.
- Superior Load Capacity: Engineered to support combined loads effectively, with a dynamic load rating of 1258 lbf and a static load rating of 731 lbf.
- High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 63,000 rpm, reducing centrifugal forces and friction.
- Optimized Internal Geometry: Features 18 precision balls with a diameter of 4.762 mm, ensuring smooth operation and load distribution.
- Pre-lubricated & Ready-to-Use: Comes pre-lubricated, simplifying installation and providing immediate, reliable operation within a specified temperature range.
71906 CE/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-speed and high-precision machinery, including:
- Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpieces
- Aerospace Instrumentation
- Robotic Drives and Actuators
