71801 ACD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71801 ACD/P4
Basic Information
System of measurement
Metric
Weight
0.006 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
21 mm
Outside diameter tolerance
-0.005mm to 0
Width
5 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
439 lbf
Radial static load rating
252 lbf
Limiting speed
95 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:
$ 145.27
/ each
In Stock
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71801 ACD/P4 Bearing Product Overview & Core Advantages
The 71801 ACD/P4 is a single-row angular contact ball bearing designed for applications requiring high precision and superior rotational accuracy. Manufactured to P4 (ABEC-7) tolerance class, this bearing excels in handling combined radial and axial loads simultaneously. Its compact design, featuring a 12 mm bore and 5 mm width, makes it ideal for space-constrained, high-speed machinery. The phenolic cage and optimized contact angle of 25° contribute to its exceptional high-speed performance and operational stability.
71801 ACD/P4 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71801 ACD/P4 is decoded as follows:
- 71801: Basic series designation for a single-row angular contact ball bearing.
- ACD: Indicates a 25° contact angle and that the bearing is designed for universal mounting (can be paired in various arrangements).
- P4: Denotes the tolerance class, equivalent to ABEC-7, signifying extremely high precision in dimensions and running accuracy.
71801 ACD/P4 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Built to P4 tolerance class, this bearing ensures minimal runout and vibration, providing the rigidity needed for precise spindle applications.
- Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm. The 25° contact angle provides an excellent balance between radial and axial load capacity.
- Superior Load Capacity: The bearing's geometry and use of chrome steel for rings and balls give it a dynamic load rating of 439 lbf and a static load rating of 252 lbf, making it robust for its size.
- Pre-lubricated for Immediate Use: Comes pre-lubricated, ensuring smooth operation from the start and reducing initial setup time.
71801 ACD/P4 Bearing Typical Application Areas
The 71801 ACD/P4 is engineered for high-performance applications, including:
- High-Speed Spindles in precision machining centers and grinding machines.
- Precision Instruments and medical devices requiring minimal vibration and high running accuracy.
- High-Frequency Motors and turbo-molecular pumps.
- Aerospace control systems and guidance mechanisms.
