S71922 ACD/P4AQGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71922 ACD/P4AQGA
Basic Information
System of measurement
Metric
Weight
3.52 kg
Tolerance class
P4A
Seal type
Sealed
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
80 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
35100 lbf
Radial static load rating
61875 lbf
Limiting speed
10 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
4
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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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S71922 ACD/P4AQGA Bearing Product Overview & Core Advantages
The S71922 ACD/P4AQGA is a precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy, rigidity, and reliability. Its design enables it to simultaneously handle significant combined loads—both radial and bidirectional axial loads. Featuring a P4A super-precision tolerance and an extra light preload (Class A), this bearing is optimized for high-speed operation and provides superior rotational accuracy. The sealed construction with phenolic cage and premium grease lubrication ensures long-term, maintenance-free performance in demanding environments.
S71922 ACD/P4AQGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71922 ACD/P4AQGA provides detailed technical specifications:
- S7: Denotes a series of high-precision angular contact ball bearings.
- 1922: Indicates the bearing size with a 110 mm bore, 150 mm outside diameter, and 80 mm width.
- A: Signifies a 25° contact angle, optimized for carrying higher axial loads.
- CD: Specifies a universal matchable (SU) design. Two bearings can be mounted in any configuration (face-to-face, back-to-back, or tandem) to achieve the desired preload and rigidity.
- P4A: The tolerance class, indicating super-precision levels for runout and dimensional accuracy, exceeding ABEC 7 standards.
- QG: Designates the use of a phenolic resin cage, which is lightweight and ideal for high-speed applications.
- A: Indicates extra light preload (Class A) for minimal friction and optimal high-speed performance.
S71922 ACD/P4AQGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and robust construction provide superior stiffness, enabling stable support for spindles and shafts under heavy combined loads.
- Super-Precision Performance: Manufactured to P4A tolerance class, this bearing ensures extremely low vibration and high running accuracy, which is critical for precision machinery.
- Optimized High-Speed Capability: The combination of the lightweight phenolic cage, 25° contact angle, and extra light preload allows for a high limiting speed of 10,000 rpm.
- Sealed & Lubricated for Life: As a sealed bearing with factory-filled grease, it is protected from contamination and is designed for maintenance-free operation within its specified temperature range (-30°C to 110°C).
- Universal Matchability (SU): The universal matchable (SU) feature provides flexibility in mounting arrangements, simplifying installation and allowing for precise control over system preload and rigidity.
S71922 ACD/P4AQGA Bearing Typical Application Areas
This high-precision double row angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and High-Frequency Motors.
- Industrial Pumps and Compressors.
- Medical Equipment and Analytical Instruments.
- Robotics and Automation Systems requiring high accuracy and rigidity.
