Today let's see something about the lifting screw rotation directions.
The lifting screw has two kinds of rotation directions.
1: When the worm shaft clockwise, the lifting screw goes up.2: When the worm shaft clockwise, the lifting screw goes down.
When multiple screw jacks make up to a whole screw jack lifting system with gearbox, the jacks' lifting direction can be of same or different rotation directions. But when space is limited and no room for gearboxes,then the jacks must be of different rotation directions.
