71901 CE/PA9ADT
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71901 CE/PA9ADT
Basic Information
System of measurement
Metric
Weight
0.02 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
776 lbf
Radial static load rating
396 lbf
Limiting speed
165 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71901 CE/PA9ADT Bearing Product Overview & Core Advantages
The 71901 CE/PA9ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to a PA9A tolerance class, ensuring ultra-precise rotational performance. Its primary advantage lies in its ability to handle high combined loads, particularly excelling under thrust loads in one direction. The phenolic resin cage and optimized 15° contact angle contribute to its suitability for high-speed operation, making it an ideal choice for high-precision spindles and machinery.
71901 CE/PA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CE | Contact angle of 15° | Optimized for high-speed performance and moderate thrust capacity. |
| PA9A | High-Precision Tolerance Class | Ensures minimal runout and vibration for superior rotational accuracy. |
| DT | Duplex Tandem Arrangement | Two bearings are mounted in tandem to increase thrust load capacity in a single direction. |
71901 CE/PA9ADT Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement and precision preload create a highly rigid bearing system capable of withstanding significant thrust loads. The chrome steel rings and balls provide high dynamic and static load ratings (776 lbf / 396 lbf).
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, while the 15° contact angle reduces heat generation, enabling a high limiting speed of 165,000 rpm.
- Precision Engineering: Manufactured to PA9A tolerance class with tight dimensional tolerances on the bore diameter, outside diameter, and width, ensuring exact fit and minimal runout for critical applications.
- Optimized for Matched Sets: Supplied as a pre-matched set of two bearings, guaranteeing consistent performance and simplifying installation in precision assemblies.
71901 CE/PA9ADT Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Machines
- High-Speed Robotics and Automation
- Medical and Dental Handpiece Drives
