The device comes with torsional stiffness of 48 Nm / Arcmin and backlash of less than or equal to 12 Arcmin (1 stage). Its rated output torque Tn is 520 Nm and maximum output torque Tp is Tn X 3 Nm. For higher rigidity and torque what it does is make use of straight gear in place of helical gear. The device also uses pre-run for meshing gears inside and making precise backlash. Its outer shell is made of aluminum and provides the ease of heat release for application. The device offers high level of efficiency.