worm gear screw drives manual descriptions A worm gear screw drives manual is composed of a handwheel and a worm gear screw drive. For manual operation applications, available in low duty cycle, light weight, and short travel length(stroke). It is ideal solutions for applications where electricity or power generators is inconvenient or dangerous. If must be not backdriving, a manual machine screw jack with self locking is the best choice. If must be manual ball screw jack with high precision, locking mechanisms need to be considered.
When worm gear screw drives manual need precise position display, a range of digital position indicators are available. These digital position indicators measure the rotations of the input shaft and display corresponding position in the digital counter window. The display value per input shaft revolution is variable and is achieved through a series of gear reductions configured to accommodate different worm gear ratios, screw pitch and travel length(stroke).
Cast Iron Handwheel Descriptions Cast iron handwheel diameter 125mm, 160mm, 200mm, 250mm, 320mm and 400mm, larger diameter handwheel is available, please consult Jacton sales. The recommend screw jack 0.25 ton, 0.5 ton, 1 ton, 2 ton, 2.5 ton, 5 ton, 10 ton, 15 ton, 20 ton capacities are available in matching cast iron handwheel for hand-operation application.
Aluminum Handwheel with Folding Handle Descriptions Aluminum handwheel diameter 80mm, 100mm, 125mm, 160mm and 200mm. The recommend screw jack 0.25 ton, 0.5 ton, 1 ton, 2 ton, 2.5 ton, 5 ton capacities are available in matching aluminum handwheel for hand-operation application.