Calculating Spring Force for a Multi Plate Clutch

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SUMMARY

The calculation of spring force required for a multi-plate clutch with four frictional surfaces, an internal diameter of 120mm, and an external diameter of 200mm, is essential for transmitting 20KW of power at 1440 RPM under uniform pressure conditions. The coefficient of friction is established at 0.3. The calculated spring force is confirmed to be 1381.597N (1.381KN) using constant wear theory, specifically the average radius method (R1 + R2 / 2). Additionally, torque conversion from 20KW at 1440 RPM yields a force requirement of 1841N.

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  • Understanding of multi-plate clutch mechanics
  • Familiarity with torque and power conversion formulas
  • Knowledge of friction coefficients and their application in clutch design
  • Experience with engineering calculators for torque transmission
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A multi plate clutch has 4 frictional surfaces, imternal diameter 120mm and external diameter 200mm. The coefficient of friction is 0.3

What spring force will be required to transmit 20KW of power at 1440 RPM if the clutch is under uniform pressure conditions?
 
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Using constant wear therory R1 + R2 / 2

I have managed to reach an answer of 1381.597N or 1.381KN (Can anyone confirm please?)

Thanks,
 

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