Verfahren zur Ermittlung der Spindelmutter- und Stopfbuchsreibung von Armaturen mit elektrischem Stellantrieb und Meßanordnung zur Durchführung des Verfahrens

摘要

In a valve or fitting with a spindle which is adjustable by a motor element via a torque, the operability of the valve or fitting is tested by applying an additional test force. The coefficients of friction of the valve or fitting are found from the different torque or driving force required at different test forces for driving the spindle.