What is the primary function of a drive coupling in a mechanical system?

In a mechanical system, the primary function of a drive coupling is to transfer torque between two shafts that are usually not aligned perfectly. This connection allows the driving shaft to turn the driven shaft, effectively transmitting rotational mechanical power. While transferring energy is a broader term that may include both torque and rotational energy, in this specific context, torque refers to the rotational force applied, which is crucial for the operation of machinery.

Drive couplings are designed to balance the mechanics of the connected shafts while accommodating misalignment and reducing wear. This is essential in ensuring that the system operates smoothly and efficiently without damaging components. Therefore, emphasizing the transfer of torque helps specify the particular nature of the mechanical interaction facilitated by the drive coupling.