DEVICE FOR MEASURING RADIAL PLAY FOR ROLLER BEARING USED IN CONTROL SYSTEMS OF AIRCRAFTS

摘要

Radial play, or internal clearance, is the internal radial looseness in a bearing and is the measured value of the total radial movement of the inner race with respect to the outer race in a plane perpendicular to the bearing axis. Radial play - it is an important factor that has a significant influence on factors such as noise, vibration, heat, stress, deflection, load distribution and fatigue life. Being a critical factor, measurement of radial play is a very much necessary activity before using any new or used bearings for reliable opera tion of components. Non-availability of such standard device hampers the reliability of assembly. Therefore a device is designed and developed for the same purpose. Device is provided for measuring radial play of roller bearings used in aggregates of airframe and control systems of an aircraft, comprising a pair of jaws for holding the bearing outer race, a pushing member for pushing the bearing inner race in either radial directions in horizontal plane, a pulling arrangement comprising steel rope, pulley, dead weights to pull in either directions in horizontal plane, circular holding plates to hold small size bearings, to push - the pushing member, displacement sensors for indicating the direction of load application.