FIELD: mining industry. SUBSTANCE: tunneling machine is intended for driving underground openings. It has operating member with rock crushing tools, power unit with reduction unit, feed mechanism, auxiliary power unit with passage in its inner part, replaceable operating member, electric cable, and hydraulic hose. Outer housing of main power unit is rigidly connected with inner part of auxiliary power unit. Mounted on rotating part of auxiliary power unit is replaceable operating member. Electric cable and hydraulic hose for main power unit are inserted through passage in inner part of auxiliary power unit. Supports of peripheral rows of rock crushing tools are mounted on dampening members. EFFECT: high efficiency. 1 cl, 1 dwg
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