71901 CE/P4ADFC
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71901 CE/P4ADFC
Basic Information
System of measurement
Metric
Weight
0.02 kg
Tolerance class
P4A
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 Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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
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71901 CE/P4ADFC Bearing Product Overview & Core Advantages
The 71901 CE/P4ADFC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex bearing set features a Face-to-Face (DF) matched arrangement and a Moderate (Class C) preload, delivering superior system stability and resistance to complex combined loads. Manufactured to P4A tolerance class, it ensures minimal runout and is ideally suited for high-precision, high-speed spindles and machinery.
71901 CE/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates a 15° contact angle and specific internal design optimized for high-speed operation. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| DF | Specifies the Duplex Face-to-Face mounting arrangement, which increases system rigidity and accommodates moment loads. |
| C | Indicates the Moderate preload level (Class C), balancing rigidity, speed, and thermal performance. |
71901 CE/P4ADFC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex DF arrangement creates a rigid bearing system capable of handling significant combined radial and axial loads from both directions, as well as moment loads.
- High-Speed Performance: The lightweight phenolic resin cage, 15° contact angle, and optimized internal geometry contribute to a high limiting speed of 165,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, OD, and width tolerances, this bearing guarantees precise shaft positioning and smooth, quiet operation.
- Superior Material: Components made from chrome steel provide high hardness, wear resistance, and a long operational lifespan under demanding conditions.
71901 CE/P4ADFC Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and drilling)
- Precision Spindles in PCB drilling and routing machines
- High-Frequency Motors
- Medical and Dental Handpieces
- Optical and Measurement Instrumentation
