The invention concerns proceeding and device for facilitating the handling of a manually drivable and mechanically operable grinding machine (1) for floors (3) and other similar surfaces and which grinding machine (1) comprises a rotatable grinding disc (2), which is driven by a motor (5) and carried by an articulated motor housing (9) supporting the grinding disc on the chassis (10) of the machine. According to the invention, the motor housing (9) in question is counterbalanced so that the same becomes balanced in relation to the chassis (10) of the machine.