Conventional screw jack applications consist of one or more screw jacks. Usually they are driven by one electric motor and typically connected via drive shafts or couplings resulting in efficiency losses within the drive train. Screw jacks fitted with worm/wormwheel or bevel gear sets often reach their maximum limit when operating with high duty cycles or high linear speeds. These are two of the main reasons for the development of our new quiet and efficient lifting system. After a long development program with the supprt of local universities the new DSH screw jack has been created.
The INKOMA-DSH screw jacks have no internal gear system. Instead a special Torque motor is used to directly drive the ballscrew spindle resulting in smooth backlash free rotation. In the DSH system there are virtually no mechanical losses. Specially selected bearings ensure the spindle can withstand both tensile and compressive loads. The compact drive unit has a rigid construction and is suitable for high dynamic applications. Cycle times of 7 cycles per second and lifting speeds of 32m/min are achievable. Repeatable positioning accuracy is also very high. The DSH-units can be synchronised when working together within a system, allowing the screw jacks to be positioned at different levels within the application.