Abstract:This paper completed a MG400/930 WD Electric Traction Shearer of equipment configuration for the layout .Shearer introduced the type and principle,and the current domestic Shearer's current situation and development trend .From The left arm、left traction Department、 the Department of left running,、the electrical control box on the left and right electrical control box,、dextral box、 and the right of traction 、right arm to the specific layout of the features have been covered,shearer will focus on completing the design of the Rocker which including Shell and Shell within one axis,、the first-round group inert、 two-axis,、the second-round group inert、 the third-round group inert,、the center round group、first-class planetary reducer,、and the second-stage planetary reducer almost all parts of the assembly.The shaft speed and power transmission are calculated importont .First-class Spur Gear reducer design calculation, the second-straight cylindrical gear reducer design, first-class planetary reducer design calculation, the second-stage planetary reducer design, the design of the shaft and Verification, Bearing all the support bearings choice Department Verification, Key spent connecting Department spent Key Selection and Verification.