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APPLICATION
& OPERATION : |
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This machine is used to test the fatigue strength of materials and
to draw S-N diagram by research institutes, laboratories, material
manufactures 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 such that it experiences a uniform bending moment. The
specimen is rotated at 4200rpm by a motor. A complete cycle of reversed
stresses in all fibers 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. A digital counter records
total number of revolutions at which the specimen fails. An interlocking
system puts off the motor at specimen failure. Machine meets requirements
of IS 5075 – 1969. |
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FEATURES
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1. Lightweight compact size, simple design.
2. Table model. No need foundation.
3. Simple lever system of changing load.
4. Accurately calibrated as per IS 5075.
5. Calibration in Nm available on request.
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TECHNICAL
SPECIFICATIONS : |
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MODEL NTG-8 (G) |
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1. |
Maximum bending moment |
kg cm |
200 |
2. |
Bending moment adjustable |
kg cm |
25-200 |
3. |
Ranges |
I - kg cm |
25-125 |
II - kg cm |
125-200 |
4. |
Griping dia of specimen |
mm |
12 |
5. |
Testing dia of specimen |
mm |
8 |
6. |
Rotating speed |
rpm |
2800 |
7. |
Accuracy of applied bending moment |
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+ 1% |
8. |
Digital counter No. Of digits(0-999999) |
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6 |
9. |
Power required |
HP/KW |
1.0/0.75 |
10. |
Main Supply |
3ph. |
440,V, 50 Hz A.C |
11. |
Overall Size (approx) |
mm |
1000 L x 500 W x 600 H |
12. |
Weight (approx) |
kg |
120 |
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