71816 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 CD/P4DGB
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
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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71816 CD/P4DGB Bearing Product Overview & Core Advantages
The 71816 CD/P4DGB is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a light preload (Class B) duplex set, it is engineered to handle combined loads—simultaneously supporting significant radial and axial loads. Its P4 tolerance class ensures ultra-precise running, making it ideal for high-speed spindles and other high-precision machinery. The open design, when properly lubricated, facilitates optimal performance in demanding operational environments.
71816 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing series and size designation (80mm bore, 100mm OD, 20mm width). |
| CD | Indicates a duplex bearing pair in a universal matchable (SU) arrangement. This configuration provides high rigidity and is pre-set for immediate installation. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DGB | Signifies a light preload (Class B) applied to the duplex set. This preload eliminates internal clearance, enhancing system stiffness and rotational accuracy. |
71816 CD/P4DGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex (CD) design and 15° contact angle create a highly rigid bearing system capable of withstanding combined radial and axial loads. The light preload ensures minimal deflection under load, critical for machining accuracy.
- Super-Precision Performance: Manufactured to P4 tolerance class, this bearing guarantees exceptional running accuracy and low vibration levels, which is paramount for high-speed applications.
- Optimized High-Speed Operation: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling a high limiting speed of 28,000 rpm. The open design allows for efficient lubrication management.
- Universal Matchability (SU): As a universal matchable bearing, any two bearings from this series can be paired in various configurations (back-to-back, face-to-face, or tandem) to meet specific application requirements for rigidity and moment load capacity.
71816 CD/P4DGB Bearing Typical Application Areas
The 71816 CD/P4DGB is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed drills and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
