Gear motor slowdown motor torque to accept two ways: a constant load torque and the cutting torque (Including the friction torque); Add/deceleration torque. Here are the two torque calculation method and when choosing motor should be satisfactory conditions. No-load condition 1 machine run time, add on motor torque should be less than the 50% of additional torque of the motor. Otherwise, in cutting or add and subtract/speed motor will overheat. Condition 2 (Reduction)Time is shorter, shall be within the scope of promise in motor. Generally, load torque assist only smart motor slowdown, therefore, if can speed up within the time promised to end, deceleration also can be finished at the same time. So let's just calculate to speed up the moment, and within the time promised to check the torque on the mechanical properties of the motor of discontinuous zone. Frequently to locate and add 3 / deceleration can make motor fever, now need to calculate the root mean square value of the torque motor accept Trms, make it less than the additional motor torque Tc. Condition 4 load moved frequently, to compute the one work cycle of the root mean square value of load moment Tmrs, make it less than additional torque of motor. Condition 5 with maximum cutting torque motor running time should be within the scope of the promise of accounting Ton. Conditions of 6 load inertia is less than 3 times their own inertia motor (Recommend to 2. 5 times)。