71816 CD/P4DFB
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 CD/P4DFB
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
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/P4DFB Bearing Product Overview & Core Advantages
The 71816 CD/P4DFB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set features a Face-to-Face (DF) arrangement and a P4 tolerance class, making it ideal for high-precision spindles and machinery. Its core advantages include the ability to handle combined loads (radial and axial) simultaneously, superior running accuracy, and high operational stability under light preload. The open design allows for customized lubrication schemes to optimize performance for specific high-speed applications.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing designation indicating a metric, angular contact ball bearing with an 80 mm bore, 100 mm OD, and 20 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is supplied as part of a duplex (matched) pair. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
| DF | Specifies the Face-to-Face duplex arrangement. This configuration provides high moment rigidity and is tolerant to misalignment. |
| B | Indicates a Light Preload / Class B. This preload eliminates internal clearance, enhancing system rigidity and rotational accuracy. |
71816 CD/P4DFB Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The duplex DF arrangement and factory-applied light preload create an exceptionally rigid bearing system that minimizes axial and radial runout, crucial for precision machining and high-performance spindles.
- Superior Load Capacity: The angular contact design with a 15° contact angle enables the bearing to efficiently support combined radial and axial loads. The duplex set effectively shares the load, increasing overall system life and stability.
- Optimized High-Speed Performance: The lightweight phenolic cage ensures low centrifugal forces and excellent guidance at high speeds, contributing to a limiting speed of 28,000 rpm. The open seal type allows for efficient airflow and customized lubrication for thermal management.
- Material Integrity: Manufactured from high-grade chrome steel for both rings and balls, this bearing ensures high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
71816 CD/P4DFB Bearing Typical Application Areas
The 71816 CD/P4DFB is engineered for high-precision, high-speed rotational systems. Its primary applications include:
- 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 other micro-machining.
- Industrial Pumps & Compressors: For applications demanding high shaft rigidity and accuracy.
