S71920 CE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71920 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.78 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.009mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
24
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8775 lbf
Radial static load rating
7088 lbf
Limiting speed
13.3 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:
$ 1576.32
/ each
In Stock
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S71920 CE/P4A Bearing Product Overview & Core Advantages
The S71920 CE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it is capable of simultaneously supporting combined loads (radial and axial) with high reliability. Its compact design, featuring a 100 mm bore and 20 mm width, makes it an ideal solution for space-constrained, high-performance machinery. The bearing comes preloaded and lubricated from the factory, ensuring consistent performance and simplifying installation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S71920 | Basic bearing designation, indicating a high-precision angular contact ball bearing series. |
| CE | Indicates a 15° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Specifies the tolerance class P4 (ABEC-7) and that the bearing is supplied with a preload. |
S71920 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance standards with a phenolic cage, this bearing provides superior dimensional stability and high rigidity, essential for minimizing deflection under load.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined loads, offering a robust solution for applications with complex force vectors.
- High-Speed Performance: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 13,300 rpm, making it suitable for high-speed spindles.
- Ready-to-Install & Reliable: The bearing is sealed and comes pre-lubricated, offering protection from contaminants and ensuring long-term, maintenance-free operation within its specified temperature range.
S71920 CE/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Actuators and Control Systems
