They are generally preferred in heavy industry applications. Horizontal naming is made because the gear stages are horizontally side by side. It has a wide range of usage from heavy tonnage cranes to plastic injection machines. The torque values they carry are very high compared to other gearbox types.
It can be parallel shaft consisting entirely of helical gears, or input and output shaft with conical stage at the input can be given perpendicular to each other. Depending on the mounting position, they can be supplied with additional lubrication accessories. In places where ambient temperature is high and continuous operation is desired, it is possible to supply it with additional cooling accessories.