There are different types of couplings used in the process of transmitting the torque from the motor to the driven machine. When using a coupling, it is necessary to observe some factors, such as the use of appropriate tools to assemble and disassemble the couplings, thus avoiding future engine damage. It is advisable to use couplings that are flexible and that can absorb small misalignments during the equipment step.
The maximum loads and speed limits that are provided in catalogs of couplings and motor manufacturers can not be exceeded. Performing the leveling and alignment of the engine is of paramount importance should occur periodically. Running engines that do not have attached drive elements must have their key fixed or removed in order to avoid possible accidents.
Direct coupling is characterized when the motor shaft is directly coupled to the axis of the driven load, without the use of transmission elements. Direct coupling is cheaper, safer against accidents and takes up less space. In the case of applications with direct coupling it is advisable to use ball bearings.