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ＭＸＡ－３００／４５采煤机是用于中厚煤层综采工作面的大功率无链牵引采煤机。机身由左、右机头减速箱，主、辅牵引部，电机及电控箱６个长方体部件用螺栓串联组成。机身靠底托架上平面支承定位，每个机身部件还用４个螺栓与底托架紧固在一起。主、辅牵引部齿轮驱动支承在底
MXA-300/45 Shearer is a high-power chainless haulage shearer used for fully mechanized mining face in medium-thick coal seam. The fuselage consists of left and right head gearbox, main and auxiliary traction, motor and electrical control box 6 rectangular parts in series with bolts. The fuselage by the end of the bracket on the plane support positioning, each fuselage parts also with four bolts and the bottom bracket fastened together. Main, auxiliary traction gear drive support in the end