Line Shaft Winch is used to raise and lower fire curtains. The curtain is held in place by a disk brake that is engaged by the fire line. When released, an adjustable hydraulic speed governor controls the curtain's descent speed. The motorized line shaft winch is used to raise and lower fire curtains. It is available for operation on 208, 230, or 460 VAC 3 phase power. This is mounted either upright or under-hung for direct vertical lift. It has heavy-duty construction and redundant braking systems.