The aim of the УКН-400 shearer development was to create a high-level shearer with increased operating member drives reliability equipped with the integrated feeding system with frequency control of the feeding speed and providing coal extraction from the seams with unsteady hypsometry in longwalls with the lengths of up to 400 m, where the produced shearers 1K101У, K103M , UKД200 with the remote feeding system cannot be applied.
The shearer is designed for mechanized coal mining as part of stoping complexes 1MKДД, 1MKД90, 1MKД80 in stopes of gently and steeply sloping seams with the capacity of 0.85-1,5 m advancing to the seams strike with dip angles of up to 35°, as well as to the rise and the dip with angles of up to 10° with the coal cuttability up to 360 kN/m.