71806 ACD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71806 ACD/P4DGB
Basic Information
System of measurement
Metric
Weight
0.052 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1521 lbf
Radial static load rating
1598 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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
Price:
$ 149.54
/ each
In Stock
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71806 ACD/P4DGB Bearing Product Overview & Core Advantages
The 71806 ACD/P4DGB is a precision angular contact ball bearing designed for applications demanding high rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-lubricated, matched pair set, it excels in handling combined radial and axial loads simultaneously. Its P4 tolerance class and light preload (Class B) ensure exceptional running precision, making it ideal for high-speed spindles and other high-precision machinery where reliability and performance are critical.
71806 ACD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Designates a 25° contact angle and specific internal geometry optimized for high axial load capacity and rigidity. |
| P4 | Indicates a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DGB | Signifies a Universal Matchable (SU) pair. Two bearings are supplied as a matched set (2 bearings) for simplified mounting and optimal preload performance. |
71806 ACD/P4DGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and dual-bearing matched arrangement provide superior stiffness, enabling the bearing to effectively support significant combined radial and axial loads.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground components contribute to a high limiting speed of 100,500 rpm.
- Precision Operation: Manufactured to P4 tolerance class with a light preload, this bearing ensures minimal runout and vibration for smooth, accurate rotation in demanding applications.
- Optimized for Matched Sets: The Universal Matchable (SU) design allows for flexible mounting configurations (DB, DF, DT) to suit specific application needs for rigidity and load distribution.
71806 ACD/P4DGB Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Medical and Dental Equipment Drives
