The unit represents a drive electric motor, a gearbox, a loading device and a screw-nut connection under study, fixed on a test base with an input-output module, designed for studying the characteristics of the screw-nut threaded pair, determining the friction moment in the pair, determining the friction coefficient in the screw-nut pair and the dependence of the torque required for tightening the connection on the force in the connection, taking into account the friction forces at the screw end and without taking them into account.
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