We must ensure that we do not overwork the equipment in everyday use, meaning that the elevator should operate within its rated load capacity. Otherwise, the worm gear and its components will experience excessive temperature rise and increased wear, thereby reducing the lifespan of the equipment.

The ball screw selected offers a driving torque one-third that of a standard ball screw. This is due to the numerous ball bearings rolling between the screw and nut, enabling higher motion power. Moreover, its driving torque is only one-third of that of a trapezoidal screw, meaning the required power for lifting is one-third that of a trapezoidal screw lifting machine, contributing to energy and emissions reduction.

Ball screw can be pressurized, and the pressure can achieve a negative axial clearance, resulting in very high rigidity.