The current capacity of screw press is only 100 kg/hr. Motor is 22kw, shaft RPM is 16, applied torque is 13,120 Nm, theoretical volume is 0.000967 cu m.

  1. Am I correct to say the press is going = 13,120 Nm divided by 0.000967 cu m will get the pressure Nm/cu m?
  2. If it is ok how can I increase the capacity to meet the same applied pressure equal to above answer?



  • $\begingroup$ Increase either the volume delivered per turn at the same speed or increase the rpm for the same volume per turn. $\endgroup$ – Solar Mike Jan 12 at 7:27

If you need to calculate the pressure,

A first estimate, ignoring friction, which can be substantial is,

$ F_{screw}= T/(r*tan (\alpha)) \quad$ r is screw radius , a is pitch angle.

P= F/area of press. by increasing the motor rpm, or increasing the screw pitch you can increase the output, if your motor has enough power.


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