Electric motor driven eccentric surface grinding machine - has suction unit and grinding disc also collar fixed to housing provided with sealing lip seated on grinding disc with attachment zone concentric to rotation axis

摘要

The attachment zone of the sealing lip (27) of the collar (25) surrounding the grinding disc is used for connecting the collar, and extends to a contact zone (29) with which it seats on the grinding disc. The springy sealing lip (27) extends from its attachment zone (28) inclined to the axis of rotation (D) to its contact zone (29). Its dia. in the contact zone (29) is smaller than the dia. in the attachment zone. The suction resulting due to the suction unit (24) in the housing (1) in the grinding operation, with which the sealing lip seats on the grinding disc, is reduced. ADVANTAGE - Wear on sealing lip is reduced, due to sealing lip at standstill sitting on rotating disc.