71801 ACDGB/P4VT105
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71801 ACDGB/P4VT105
Basic Information
System of measurement
Metric
Weight
0.006 kg
Tolerance class
NSTD
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
25 °
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
439 lbf
Radial static load rating
252 lbf
Limiting speed
100 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
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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71801 ACDGB/P4VT105 Bearing Product Overview & Core Advantages
The 71801 ACDGB/P4 is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered with a 25° contact angle and a light preload (Class B), this bearing excels at handling combined loads—simultaneously supporting significant radial and axial forces. Its compact design, featuring a 12 mm bore and 5 mm width, makes it ideal for space-constrained, high-speed machinery. Manufactured from chrome steel with a phenolic cage, it offers reliable performance in demanding operational environments.
71801 ACDGB/P4VT105 Bearing Model Code Explained, Specifications & Naming Convention
The model number 71801 ACDGB/P4 reveals its specific technical features:
- 71801: Basic model number denoting a metric, single-row angular contact ball bearing with specific dimensions.
- AC: Angular Contact design with a 25° contact angle.
- D: Signifies a specific internal design and optimized internal geometry for high performance.
- GB: Indicates a Light Preload (Class B), which enhances rigidity and minimizes axial and radial play for precise shaft positioning.
- P4: Denotes a high-precision tolerance class, superior to ABEC 7, ensuring extremely tight dimensional and running accuracy.
71801 ACDGB/P4VT105 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The light preload eliminates internal clearance, providing superior system stiffness and accurate rotational performance, critical for high-precision spindles.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support combined radial and axial loads, making it suitable for complex loading conditions.
- High-Speed Capability: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 100,000 rpm.
- Durability and Reliability: Constructed from high-grade chrome steel for both rings and balls, the bearing offers excellent wear resistance and long service life under standard grease lubrication.
71801 ACDGB/P4VT105 Bearing Typical Application Areas
This precision bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Electric Motors
- Medical and Dental Handpieces
- Aviation Auxiliary Power Units (APUs) and other precision instruments requiring high rotational accuracy and speed.
