Manually/electrically operated; light weight, reduces load stress on building supports; low headroom, hence reducing cost of building construction; compact with easy accessibility for maintenance; 30 to 40% reduction in power consumption; cost saving design; minimum vibration in main girder; maximum lift; and minimum horizontal stress due to wind load. Special features for long travel motion: electric/electronic soft starts coupled to drive for jerk-free, and smooth starts; motor to gearbox transmission through