71816 CD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 CD/P4DGC
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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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71816 CD/P4DGC Bearing Product Overview & Core Advantages
The 71816 CD/P4DGC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 tolerance class, this bearing excels in high-speed environments with a limiting speed of 28,000 rpm. Its key advantage lies in its Universal Matchable (SU) design, allowing two bearings to be precisely paired for optimal performance in preloaded arrangements. This configuration enables the bearing to handle significant combined loads (radial and axial) simultaneously, making it an ideal choice for high-precision spindles and machinery.
71816 CD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing designation indicating a metric, angular contact type with an 80mm bore, 100mm OD, and 20mm width. |
| CD | Indicates a 15° contact angle and a specific internal design optimized for high-speed operation and universal matching. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DGC | Signifies a Moderate preload (Class C) applied to the bearing, enhancing system rigidity and reducing deflection under load. |
71816 CD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and moderate preload provide superior rigidity, effectively resisting deflection under complex combined loads. With a dynamic load rating of 5355 lbf and a static load rating of 8212 lbf, it offers reliable performance in strenuous conditions.
- Optimized High-Speed Performance: The phenolic cage is lightweight and robust, contributing to lower centrifugal forces and smooth operation at the high limiting speed of 28,000 rpm. The 15° contact angle is ideal for applications where high-speed capability is critical.
- Precision Engineering: Manufactured to P4 tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and vibration, which is essential for precision machining and high-accuracy systems.
- Universal Matchability (SU): This feature allows two bearings to be supplied as a matched set, ensuring optimal load distribution and performance when used in pairs, typically in a back-to-back or face-to-face arrangement.
71816 CD/P4DGC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring high rigidity and precision.
- Precision Instrumentation: Measuring devices and laboratory equipment where minimal vibration and runout are paramount.
- High-Frequency Motors and Spindles: Applications demanding stable operation at very high rotational speeds.
- Robotics and Automation: Articulated arms and precision gearboxes where accurate motion control is essential.
