71816 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71816 ACDGA/P4
Basic Information
System of measurement
Metric
Weight
0.15 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
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
35
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3105 lbf
Radial static load rating
3825 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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
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71816 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71816 ACDGA/P4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate primarily axial loads in one direction and combined loads, its P4 super-precision tolerance ensures minimal runout and vibration, making it ideal for demanding, high-speed machinery. The bearing features a phenolic resin cage for reduced weight and friction, contributing to its impressive limiting speed of 28,000 rpm. Pre-lubricated and manufactured from high-grade chrome steel, it offers reliable performance and long service life in critical operational environments.
71816 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| AC | Angular Contact | Optimized geometry for handling combined radial and axial loads. |
| DGA | Contact Angle & Preload | Specifies a 25° contact angle and Extra Light (Class A) preload for high rigidity and precise shaft positioning. |
| P4 | Tolerance Class | Denotes super-precision manufacturing tolerances for applications requiring extreme accuracy and smooth operation. |
71816 ACDGA/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle and Class A preload provides superior system stiffness, minimizing deflection under load and ensuring precise shaft guidance. The P4 tolerance class guarantees tight dimensional control for exceptional running accuracy.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and enables stable operation at the high limiting speed of 28,000 rpm. This makes the bearing an excellent choice for high-speed spindles.
- Universal Matching Capability (SU): This bearing is manufactured as a Universal Matchable (SU) bearing. Multiple bearings can be mounted in a matched set (e.g., DB or DF arrangements) to share loads and achieve specific preload levels, enhancing overall system performance and stability.
- Robust Load Capacity: With a dynamic load rating of 3105 lbf and a static load rating of 3825 lbf, it is capable of handling significant loads for its compact bearing dimensions (80mm bore, 100mm OD, 10mm width).
71816 ACDGA/P4 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, dental handpieces, and other small, high-speed motorized spindles.
- Robotics: High-accuracy joints and actuators.
- Medical Equipment: Centrifuges and high-speed scanners.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
