Cast Iron Hand Wheel Used in Manual Screw Jack for Lift Table

Cast Iron Hand Wheel Used in Manual Screw Jack for Lift Table. A hand wheel is a convenient solution for manually operating a screw jack when using worm gear machine screw jacks in intermittent positioning applications. Hand wheels are available in a range of diameters from 125mm to 500mm and can be adapted for use on jacks up to the 20 tons capacity model. NOTE: Hand wheels do not include a brake and therefore are not for use with ball screw jacks. When using hand wheels with a jack that can back drive, so an additional locking mechanism may be required to prevent "creep".