... adjustable Drawings and Parameters of Forward and Backward Running Low Speed High Torque Motors(300Nm~500Nm) Rated ... kw380V20~50rpm614A92.5%330kgCharacteristics:1.Frequent forward & backward running, speed adjustable, the interval time is adjustable.2. ... , long life. 6.Multiple running model, can achieve continuous running, intermittent running, speed-regulating running or fast break according to the ...