71901 CD/P4A
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71901 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.01 kg
Tolerance class
P4 (ABEC-7)
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
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
13
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
596 lbf
Radial static load rating
281 lbf
Limiting speed
110 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:
$ 103.37
/ each
In Stock
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71901 CD/P4A Bearing Product Overview & Core Advantages
The 71901 CD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior rotational accuracy. Engineered to P4 (ABEC-7) tolerance class, this bearing excels at handling combined loads (radial and axial) simultaneously, with a 15° contact angle optimized for high axial load capacity. Its compact design (12mm bore, 24mm OD, 6mm width) and phenolic cage contribute to exceptional high-speed performance, achieving limiting speeds up to 110,000 rpm. Preloaded and factory-lubricated, it ensures high rigidity and reliable operation in demanding precision machinery.
71901 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71901 | Ultra-light series angular contact bearing with 12mm bore diameter |
| CD | Optimized contact angle and internal design for high-speed applications |
| P4A | P4 (ABEC-7) tolerance class with specific running accuracy requirements |
71901 CD/P4A Bearing Structural Features & Performance Benefits
- High Precision Construction: Manufactured to P4 tolerance class with bore diameter tolerance of -0.004mm to 0 and outside diameter tolerance of -0.005mm to 0, ensuring exceptional dimensional stability and running accuracy
- Superior High-Speed Capability: The phenolic resin cage provides excellent strength-to-weight ratio, enabling stable operation at limiting speeds up to 110,000 rpm with minimal centrifugal forces
- Optimized Load Distribution: Features 13 precision balls of 3.175mm diameter arranged with 15° contact angle, effectively handling combined radial and axial loads with radial dynamic load rating of 596 lbf and static rating of 281 lbf
- Preload Configuration: Factory preloading eliminates internal clearance, delivering high rigidity and precise rotational characteristics ideal for precision positioning applications
- Premium Material Selection: Chrome steel rings and balls combined with phenolic cage ensure dimensional stability across the operating temperature range of -30° to 110°C
71901 CD/P4A Bearing Typical Application Areas
- High-Speed Spindles: Machine tool spindles, PCB drilling machines, and precision grinding equipment
- Precision Instrumentation: Measuring devices, optical instruments, and laboratory equipment requiring high rotational accuracy
- Aerospace Components: Gyroscopes, navigation systems, and aircraft instrumentation
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Robotics & Automation: High-precision robotic joints, CNC rotary tables, and precision positioning systems
