With these planetary gearboxes, Bonfiglioli offers the opportunity for operating the rack to raise and lower the entire hull. The units can be in-line or with a bevel gearbox to facilitate installation of the motor. They can be operated electrically or hydraulically, with or without a negative parking brake. They can be complete with output, with integrated torque arm for easy installation on the machine and with integrated pinion shaft with 50 or 100 toothing module, and large capacity bearing.