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Fatigue Testing Machine


  • This machine is light, compact and simple design used to test the fatigue strength of materials and draw S-N diagram used for research institutes, laboratories, material manufacturers and various industries.
  • Table model, no need of foundation.
  • 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 such that it experiences a uniform bending moment. The specimen is rotated at 4200 rpm by a motor. A complete cycle of reversed stresses in all fibres of the specimen is produced during each revolution.
  • The bending moment is applied with a lever system and can be easily changed by moving a weight over the lever.
  • Total number of revolutions at which the specimen fails are recorded by a Digital counter.
  • An interlocking system puts off the motor at specimen failure.
  • Machine meets requirements of IS 5075-1969.
Sr. No. Description Unit Values
1. Maximum bending moment Kg cm 200
2. Bending moment adjustable Kg cm 25 – 200
3. Ranges Kg cm
Kg cm
25 – 125
125 – 200
4. Gripping dia of specimen mm 12
5. Testing dia of specimen mm 8
6. Rotating speed rpm 4200
7. Accuracy of applied bending moment % ± 1%
8. Digital counter No.of digits - 8
9. Power required HP 0.5
10. Main supply 3 Phase, 440 Volts, 50 Hz, A.C
11. Overall size (approx) mm L 1000 x W 500 x H 600
12. Weight (approx) kg 120