Method and system for evaluating a maintenance requirement of a linear transmission device

A system for evaluating a maintenance requirement of a linear transmission device, comprising:

• a linear motion unit that includes said linear transmission device, and a driving device disposed to drive said linear transmission device;
• a sensing unit that is installed on said linear motion unit for sensing multiple physical quantities related to operation of said linear motion unit, so as to output a plurality of electric sensor signals that respectively correspond to the physical quantities;
• and
• a control unit that is communicatively connected to said linear motion unit and said sensing unit for controlling operation of said linear motion unit, and for receiving the electric sensor signals from said sensing unit, and that is configured to calculate at least four correction factors based on the electric sensor signals, and to calculate a service life of said linear transmission device based on the electric sensor signals and the at least four correction factors for scheduling maintenance of said linear transmission device.