This machine is used to test the fatigue strength of materials and to draw S-N diagramby research institutes, laboratories, material manufacturers and various industries. This is a rotating beam type machine in which load is applied in reversed bending fashion.The standard 8 mm dia specimen is held in special holders at its ends and loaded suchthat it experiences a uniform bending moment.The specimen is rotated at 4200 rpm by a motor. A complete cycle of reversed stressesin all fibres of the specimen is produced during each revolution. The bending moment isapplied with a lever system and can be easily changed by moving a weight over thelever. Total number of revolutions at which the specimen fails are recorded by amechanical counter. An interlocking system puts off the motor at specimen failure.Machine meets requirements of IS 5075-1969Features :• Light weight, compact size, simple design• Table model, no need of foundation• Simple lever system for changing load• Accurately calibrated as per IS 5075• Calibration in Nm available on request

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