What is being securely transmitted with a coupler from one shaft to another?

A coupler is a device used to connect two shafts in a mechanical system so that they can transmit energy between them. The key aspects that are transmitted through a coupler are torque and speed. Torque is the rotational force applied to the shaft, which is essential for performing work in any rotating system, while speed refers to how fast the shaft is rotating.

In mechanical applications, the coupling is engineered to keep these two parameters consistent and efficient, allowing machines to operate smoothly and effectively. The transmission of torque and speed is critical because it ensures that the machinery can perform its intended function, whether it's in a simple engine or a complex assembly line setup. With this understanding, the significance of torque and speed is clear; they are fundamental to the effective operation of rotating machinery and the overall performance of power transmission systems.