Apparatus for determining the starting moment of rolling bearings

Summary

The described apparatus for measuring the starting moment of rolling bearings is distinguished by its automatic operation, which excludes the human errors which may occur in the direct reading of an instrument scale, the absence of a ponderable pendulum, the great stability of the readings, the exclusion of friction effects of any other mechanical systems, high sensitivity, which makes it possible to record moments differing by 0.005 g · cm, smooth and continuous increase of the external torque, the possibility of installing the apparatus in an airtight chamber in which the atmosphere can be varied (vacuum, various gases, increased pressure, etc.): and thus it possesses significant advantages over other known instruments.