Manual Screw Jack detailed informations:
1. A hand wheel is a convenient solution for manual operated a screw
jack or screw jack systems. When using screw jacks in intermittent
positioning applications. Hand wheels are available in a range of
diameters from 125mm~500mm and customized follow clients'
2. Hand Wheels do not include a brake. Hand wheels are not
recommended for use with ball screw jacks. When using hand wheel
with a screw jack that can backdrive an additional locking
mechanism may be required to prevent "creep".
3. For precise position display, a range of digital counters are
available for use with screw jacks. These digital counters measure
the rotation of the input shaft and display corresponding position
in a counter window. The display value per input shaft revolution
is variable and is achieved through a series of gear reductions
configured to accommodate different jack ratios, lifting screw
pitch and travel distances.