FIELD: process engineering.
SUBSTANCE: invention relates to machine building, particularly, to cooling of mechanised tools. Proposed tool comprises case, percussion assembly, motion conversion assembly, first and second air cooling channels, motor cooling fan and percussion assembly cooling fan. Motor is fitted inside said case with its shaft extension extending across replaceable tool axis. Percussion assembly is arranged at the case front. Motion conversion assembly is arranged on motor end side, nearby replaceable tool axle. Air cooling first channel is made in casing of air cooling to motor. Air cooling second channel is made in casing of air cooling to percussion assembly. Motor cooling fan is arranged and motor side remote from replaceable tool axis to feed air to first air cooling channel. Percussion assembly cooling fan is arranged between motor and motion conversion assembly to feed air to second air cooling channel.
EFFECT: improved cooling.
6 cl, 13 dwg
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