1. The torque of motor is about proportional to the square of voltage changes, upon the supply voltage of a motor changed, the rpm and torque characteristic curve can get depend on variety of different voltage falling characteristic.

2. From using the motor, should control the essential torque and rpm. Regardless of is continuously or the short-time use, select your required torque and rpm depend on rpm and the torque characteristic graphics. If used under the binding state, only can choose the torque as the benchmark.