So far, the connection of the individual components of a geared motor has been complex and requires the use of tools. The gearbox is attached to the flange of a motor using screws and screwdrivers. Establishing this connection takes some time and can only be realized if the appropriate material is available. Depending on the size of the gearbox, not only the size of the screws and the tool varies, but also the size of the motor. Only a few motors of different sizes can be attached to a specific gearbox size. The motor input couplings are practical spare parts for geared motors or accessories to avoid this problem.

The biggest disadvantage of this common attachment method is the stocking of the different required sizes in stock. Ultimately, you have to decide between increased storage costs or less flexibility in customer-specific conversion.