Screw gearbox for use in high temperature applications, has spindle nut and threaded spindle which are formed with internal thread and external thread at different temperature gradients with respect to reference temperature

摘要

The screw gearbox (1) has a threaded spindle (2) and a spindle nut (3) which is cooperated with threaded spindle. The threaded spindle includes an external thread (6) which is engaged with an internal thread of the spindle nut. The internal thread and external thread are formed at different temperature gradients with respect to reference temperature. An independent claim is included for a method for manufacturing screw gearbox.