The main role of universal coupling in mechanical transmission is reflected in the following aspects：

one、Transfer power and torque

Universal coupling as a mechanical transmission component，One of its core functions is to transmit power and torque。It is located between the main drive shaft and the auxiliary drive shaft，By axial or angular connection，To achieve power transmission from the drive shaft to the driven shaft。This mode of transmission ensures that the various parts of the mechanical equipment can work in coordination，Work together to complete predetermined movements and functions。

two、Mitigate the adverse effects of axis changes

During the operation of mechanical equipment，Due to various factors（If installation error、Running vibration）Influence of，There may be an axial alignment between the drive shafts、Angular and radial deviations。Universal coupling has a large angular compensation capacity，Able to deliver power at the same time，Effectively mitigate the adverse effects of these axis deviations。This can not only reduce the impact force and vibration force of the equipment，Reduce equipment load，It can also extend the service life of the equipment。

three、Improve drivetrain flexibility and adaptability

The universal coupling is compact in structure，High transmission efficiency，And it can connect two axes at different angles and axis shifts。This characteristic makes the universal coupling have high flexibility and adaptability，It can meet the needs of various complex transmission systems。Both in high-speed and heavy-duty power transmission，In the transmission of precision mechanical systems，Universal coupling can play an important role。

four、Ensure the normal operation of mechanical equipment

By overcoming axis deviation and mitigating vibration shock，Universal coupling can ensure the normal operation of mechanical equipment。It enables mechanical equipment to maintain stability and reliability in complex and changeable working environments，Improve production efficiency and product quality。

five、Improve the overall performance of the drivetrain

In some special applications，Such as high temperature and high precision transmission system（Such as aircraft engine systems）In the，Universal couplings can also be made possible by their unique structural design and material selection，Improve the overall performance of the drivetrain。Such as，Universal coupling made of high strength alloy material and precision machining technology，Can withstand higher speed and torque，Reduce energy loss，Improve transmission efficiency。

To sum up，Universal coupling plays a vital role in mechanical transmission。It not only transmits power and torque，Mitigate the adverse effects of axis changes，It can also improve the flexibility and adaptability of the drive system，Ensure the normal operation of mechanical equipment，And improve the overall performance of the transmission system。