71822 ACD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71822 ACD/P4DGC
Basic Information
System of measurement
Metric
Weight
1.01 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
8.731 mm
Ball quantity
32
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10980 lbf
Radial static load rating
17212 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71822 ACD/P4DGC Bearing Product Overview & Core Advantages
The 71822 ACD/P4DGC is a precision double-row angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Operating under P4 tolerance class, it excels in handling combined loads (radial and axial) simultaneously from both directions. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing high system rigidity and operational stability. Pre-lubricated and featuring a phenolic cage, this bearing is engineered for high-speed performance and reliable operation in precision machinery.
71822 ACD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Contact Angle of 25° and Double-Row Design |
| P4 | High Precision Tolerance Class, superior running accuracy |
| DGC | Moderate Preload (Class C) |
71822 ACD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double-row design with a 25° contact angle provides significantly increased rigidity and enables the bearing to support substantial combined radial and axial loads from both directions, making it ideal for applications with complex loading conditions.
- Precision & High-Speed Performance: Manufactured to P4 tolerance class with a lightweight phenolic cage, the bearing ensures smooth operation, minimal vibration, and a high limiting speed of 16,000 rpm, which is critical for high-speed spindles.
- Optimized for Matched Sets: The Universal Matchable (SU) feature allows two bearings to be mounted in any configuration (back-to-back, face-to-face, or tandem) without pre-selection, simplifying installation and ensuring optimal preload and system stiffness.
- Pre-lubricated & Ready-to-Use: The bearing comes pre-lubricated, ensuring immediate operational readiness and reducing maintenance requirements during the initial service life.
71822 ACD/P4DGC Bearing Typical Application Areas
This bearing is specifically designed for high-precision, high-speed applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Rotary Axes
