Type R is characterized by a rotating spindle with travelling nut.
This means: the lifting motion is performed by the travelling nut, the lifting spindle remains fixed in its axial position. Thereby worm gear screw jacks type R can be mounted right on the base, without extra implementing space needed. It´s also an advantage that the screw jack is always located outside the gearbox housing. Therefore, less heat development in the housing allows longer duties in the same conditions.
Worm gear screw jacks type R are available with either trapezoidal screw drives or ball screw drives with various nut-applications.