ZQ-21 mine DC traction motor is the owner's traction motor of the CJY7-6.7.9/250, CJY10-6.7.9/250 level transmission line type industrial and mining motor, with the characteristics of large traction force, strong overload capacity, reliable use, easy maintenance.Adopts octagonal cast steel chassis, tram suspension and nylon bearing bush. It is a reliable supporting traction motor for small locomotive in industry and mining.