71801 CD/P2
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71801 CD/P2
Basic Information
System of measurement
Metric
Weight
0.006 kg
Tolerance class
P2
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
21 mm
Outside diameter tolerance
-0.004mm to 0
Width
5 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
468 lbf
Radial static load rating
266 lbf
Limiting speed
110 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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.
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71801 CD/P2 Bearing Product Overview & Core Advantages
The 71801 CD/P2 is a single-row angular contact ball bearing designed for applications requiring high precision and superior running accuracy. Engineered to primarily accommodate combined loads (radial and axial loads in one direction), its compact design makes it ideal for space-constrained, high-performance assemblies. This bearing is supplied with a P2 tolerance class for exceptional dimensional and running accuracy, and comes pre-lubricated for immediate use, ensuring reliable operation from the start.
71801 CD/P2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71801 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 12 mm bore. |
| CD | Indicates a specific contact angle of 15° and is designed for universal matching. Bearings with this suffix can be mounted in pairs (back-to-back, face-to-face, or tandem) to support combined or axial loads in both directions. |
| P2 | Denotes a high-precision tolerance class with extremely tight limits on bore, outside diameter, and width tolerances, ensuring superior running accuracy and system rigidity. |
71801 CD/P2 Bearing Structural Features & Performance Benefits
- High Precision and Rigidity: The P2 tolerance class guarantees minimal dimensional variation, which is critical for applications requiring high positional accuracy and system stiffness. The optimized contact angle of 15° provides an excellent balance between radial and axial load capacity.
- Optimized Cage Design: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, reduced heat generation, and suitability for high-speed operation up to 110,000 rpm.
- Superior Material & Construction: Manufactured from chrome steel for both rings and balls, this bearing offers high fatigue life and durability. The open seal type allows for optimal lubrication flow in high-speed applications.
- Pre-lubricated & Ready for Use: The bearing is supplied pre-lubricated, simplifying installation and providing immediate protection, which is essential for maintaining performance in precision assemblies.
71801 CD/P2 Bearing Typical Application Areas
- High-Speed Spindles in precision machine tools and grinding machines
- Precision Instrumentation and measuring devices
- High-Frequency Motors and electric spindles
- Aerospace Actuators and control systems
- Optical Scanners and rotary encoders
