71916 ACD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71916 ACD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.74 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 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
9.525 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12578 lbf
Radial static load rating
16538 lbf
Limiting speed
17 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
In Stock
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71916 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 71916 ACD/P4ADGB is a super-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded duplex set, it delivers optimized performance for high-speed operation and superior stability under complex combined loads (radial and axial). Its P4A tolerance class ensures ultra-precise running, making it ideal for high-reliability machine tool spindles and precision equipment.
71916 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model suffix provides critical technical specifications:
- 71916: Basic series and size designation (80mm bore, 110mm OD, 32mm width)
- ACD: Angular Contact design with a 25° contact angle
- P4A: High-Precision Tolerance Class (exceeding ABEC 7/ISO P4)
- D: Indicates the bearing is supplied as a Universal Matchable (SU) duplex set
- GB: Specifies a Light Preload (Class B) applied to the matched set
71916 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex pair configuration provides exceptional stiffness and can accommodate significant combined radial and axial loads from both directions, ensuring stable shaft positioning.
- Super-Precision Performance: Manufactured to P4A tolerance class with a 25° contact angle, this bearing guarantees minimal runout and vibration for ultra-smooth, high-accuracy rotation.
- Optimized High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 17,000 rpm. The open design allows for efficient lubrication management.
- Universal Matchability (SU): As a universal matchable set, the two bearings can be arranged in back-to-back (DB), face-to-face (DF), or tandem (DT) configurations without selective shimming, offering immense flexibility in machine design.
71916 ACD/P4ADGB Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: Centrifuges and advanced imaging scanner rotors.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other precision instrumentation.
