Hydraulic motor is by using the environment temperature range - 20 ℃ - + 40 ℃. Such as salt, salt air, sand, dust, over voltage, large vibration. External impact load, ambient temperature, corrosive medium such as environmental impact will destroy the function of the equipment, these affect the manufacturer will explain to the user, to ensure the safety design.
The design of the hydraulic motor is based on years of experience in using, for different level of work, must use coefficient K of output torque required for conversion.