71816 CD/P4DGA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 CD/P4DGA
Basic Information
System of measurement
Metric
Weight
0.3 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5355 lbf
Radial static load rating
8212 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
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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71816 CD/P4DGA Bearing Product Overview & Core Advantages
The 71816 CD/P4DGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing offers superior dimensional stability and running accuracy. Its extra light preload (Class A) minimizes deflection under light loads, making it ideal for high-precision spindles. The bearing is universally matchable (SU), allowing for flexible mounting in pairs to support combined radial and axial loads effectively. Pre-lubricated for immediate use, it operates reliably within a broad temperature range.
71816 CD/P4DGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71816 CD/P4DGA is decoded as follows:
- 71816: Basic designation denoting a metric, angular contact ball bearing with an 80mm bore, 100mm OD, and 20mm width.
- C: Represents a 15° contact angle, optimized for high-speed applications with moderate axial load capacity.
- D: Indicates the bearing is filled with a standard grease lubrication.
- P4: Signifies the tolerance class, indicating very high precision in dimensions and running accuracy.
- DGA: Denotes the Universal Matchable (SU) arrangement. Two bearings can be mounted in a universal arrangement (face-to-face or back-to-back) without the need for selective assembly.
71816 CD/P4DGA Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with strict dimensional controls, ensuring minimal runout and vibration. The phenolic resin cage provides high strength with low weight, contributing to smooth operation at high speeds.
- Optimized Load Capacity: The 15° contact angle and robust internal geometry enable the bearing to handle significant combined (radial and axial) loads efficiently.
- Superior High-Speed Performance: The lightweight phenolic cage and optimized internal design allow for a high limiting speed of 28,000 rpm. The extra light preload further reduces friction and heat generation at high rotational speeds.
- Universal Matching Capability (SU): As a universally matchable bearing, it simplifies installation in duplex sets, providing pre-defined axial clearance and ensuring optimal performance in paired configurations without complex calculations or selective fitting.
- Wide Operating Range: Constructed from high-grade chrome steel for both rings and balls, the bearing operates reliably in a temperature range from -30°C to 110°C.
71816 CD/P4DGA Bearing Typical Application Areas
The 71816 CD/P4DGA is engineered for high-performance applications where precision and speed are critical. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Robotics: Articulated arms and precision joints requiring high rigidity and accuracy.
- Medical Equipment: Dental handpieces, centrifuges, and scanner gantries.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
