FIELD: process engineering.
SUBSTANCE: invention relates to hand-geld tools. Seal of gearing chamber accommodating motor step-down gearing with grease comprises separation wall to separate said chamber from motor and to support the rotary shaft running in bearing. Motor rotation is transmitted to step-down gearing via rotary shaft, seal jointed to said shaft to revolve therewith, grease retainer arranged at said seal on gearing chamber side so that grease can displace from the bearing by centrifugal force generated at shaft rotation.
EFFECT: perfected seal.
13 cl, 5 dwg
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