System for cleaning or finishing workpieces (86), with a handling device (92) in the form of a robot or a portal on which a device (10) is received by means of a connection (16) on which a housing (12) is received , with a drive motor (28) for driving at least one roller (18, 20, 22) for treating a workpiece (86), the at least one roller (18, 20, 22) at least from a cover (19, 21, 23) is partially covered and is coupled to a suction device (25, 26).
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