Handwheel Worm Screw Lift Jacks 2.5tons

handwheel worm screw lift jacks 2.5tons. A hand wheel is a convenient solution for manually operating a jack when using acme screw jacks in intermittent positioning applications. Acme screw jacks offer positive mechanical action, precise positioning, and uniform lifting speeds. Hand wheels are available in a range of diameters from 5 to 16 inches and can be adapted for use on jacks up to the 20 tons capacity model.

Most of hand operated screw jack is main application in where electricity or power generators is inconvenient or dangerous. Or emergency conditions, for example, sluice gate motorized jack, when power failure, the jacks can be operated by manually via a hand wheel. or light weight, low duty cycle, short travel stroke, minute adjustment, slow travel speed and intermittent positioning applications.

Hand wheels in a variety of diameters. They are recommended for self-locking jacks and actuators and can be mounted directly to the jack input shaft. Since hand wheels are are mounted directly onto jacks and actuators and specified as part of the complete jack part number. Their specific selection is dependent on input torque requirements.

Our standard jacks use Trapezoidal screw and have self-locking function which is very safe for manually operated by hand. We have different models for your selection, our jtw series machine screw jack is the most cost-effective selection for this application. You can also use digital position indicators if you need more precise position display. It can measure the rotations of the input shaft and display the 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 screw jack ratios, screw pitch, and travel length.