71816 CD/P4DFA
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 CD/P4DFA
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
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
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/P4DFA Bearing Product Overview & Core Advantages
The 71816 CD/P4DFA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a Face-to-Face (DF) matched arrangement and an Extra Light (A) preload, making it ideal for handling combined radial and axial loads simultaneously. Manufactured to P4 tolerance class, it delivers superior running accuracy and is pre-lubricated for immediate use in high-speed, high-reliability machinery.
71816 CD/P4DFA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing designation indicating a double row angular contact ball bearing with 80mm bore, 100mm OD, and 20mm width. |
| C | 15° contact angle, optimized for high axial load capacity. |
| D | Indicates the bearing is part of a duplex pair. |
| P4 | High precision tolerance class, ensuring minimal runout and vibration for demanding applications. |
| DF | Duplex Face-to-Face arrangement. This configuration increases system rigidity and is suitable for moment loads. |
| A | Extra Light preload. This internal preload minimizes axial play, enhances stiffness, and improves positional accuracy at the cost of slightly lower limiting speed. |
71816 CD/P4DFA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex DF arrangement and double row design create an exceptionally rigid bearing system capable of withstanding significant combined loads (radial and axial) and moment loads.
- Precision Performance: Manufactured to P4 tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures smooth, precise operation with minimal runout.
- Optimized High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 28,000 rpm. The standard lubrication is suitable for this operational range.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring a long service life under demanding conditions.
71816 CD/P4DFA Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Robotic Drives.
- High-Frequency Motors and Spindle Drives.
- Medical Equipment and Optical Instrumentation.
