When facing with the need to lift, lower, push or pull a load,especially a heavy load and hold it in the correct position, as crew jack or multiple screw jack system may provide the best linear motion solution when considering its performance/cost ratio. There are 3 main types of screw jacks:machine/worm gear screw jacks,ball screw jacks, and bevel gear screw jacks. Within these, there are 3 subcategories related to the mode of operation: Translating, Keyed, and Rotating/Traveling nut.  Let's see how these three subcategories move in below ,

In order to know if a screw jack or screw jack system could be a solution for your application, you will need to consider which type of screw jack to select. There are worm gear screw jacks, bevel gear screw jacks and ball screw jacks, and each has several different options and configurations.

To determine the type of screw jack that is best for your application, you need to consider several factors, including: load, self-locking capabilities, travel rate or travel speed, efficiency, accuracy, duty cycle and price,etc.