71922 ACDGC/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71922 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.86 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
110 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
150 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13162 lbf
Radial static load rating
15300 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
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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71922 ACDGC/P4A Bearing Product Overview & Core Advantages
The 71922 ACDGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. This bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve optimal stiffness and performance. Its 25° contact angle is optimized to handle significant combined loads, including high radial and one-directional axial loads, making it an ideal choice for high-speed and high-rigidity spindle applications.
71922 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| AC | Angular Contact design. |
| D | High contact angle (25°). |
| GC | Specific internal clearance and preload group for moderate preload (Class C). |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
71922 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and phenolic cage provides high resistance to combined loads, ensuring stable operation under demanding conditions.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, guaranteeing smooth, quiet, and vibration-free running essential for precision machinery.
- High-Speed Capability: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 10,000 rpm, making it suitable for high-speed spindle applications.
- Universal Matching: As a Universal Matchable (SU) bearing, multiple bearings can be mounted together in a preloaded arrangement to create a system with enhanced rigidity and precise axial positioning.
71922 ACDGC/P4A Bearing Typical Application Areas
This precision bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Motors
- Precision Grinding Equipment
- Industrial Pumps and Compressors
- Aerospace Positioning Systems
