71916 ACDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71916 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.37 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
16 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
7762 lbf
Radial static load rating
8212 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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
Price:
$ 169.26
/ each
In Stock
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71916 ACDGA/P4A Bearing Product Overview & Core Advantages
The 71916 ACDGA/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing features a 25° contact angle and an extra light preload (Class A), making it ideal for high-speed spindles and other precision machinery. Its open design allows for optimized lubrication management, contributing to its high limiting speed and ability to handle combined loads efficiently.
71916 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 71916 ACDGA/P4A provides detailed technical specifications:
- 71916: Basic bearing series and size designation (80mm bore, 110mm OD, 16mm width)
- A: 25° contact angle
- CD: Universal Matchable (SU) designation, indicating the bearing is supplied in sets of three for duplex arrangements
- GA: Extra light preload (Class A)
- P4A: High precision tolerance class exceeding ABEC 7 standards
71916 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The angular contact design with P4A tolerance class ensures minimal runout and superior dimensional stability under operational stresses, providing exceptional support for high-speed applications.
- Optimized Load Capacity: With a 25° contact angle, the bearing effectively supports combined radial and axial loads. The dynamic load rating of 7762 lbf and static load rating of 8212 lbf ensure reliable performance under demanding conditions.
- High-Speed Performance: The phenolic cage and open seal design reduce friction and allow for efficient lubrication, enabling a high limiting speed of 17,000 rpm.
- Precision Matching: Designated as Universal Matchable (SU) and supplied in sets of three, these bearings are precision-ground to be mounted in duplex pairs (DB, DF, DT) without additional selection, ensuring optimal preload and system stiffness.
71916 ACDGA/P4A Bearing Typical Application Areas
This super-precision bearing is specifically engineered for high-performance applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Robotics: Arm joints and rotary actuators requiring minimal backlash
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Medical Equipment: High-speed dental handpieces and surgical drill motors
- Test & Measurement Equipment: Coordinate measuring machines and optical scanners
