SPE Extrusion Division 1-0-Wiki



Extrusion 1-0-Wiki Pages

Search the Wiki


Account Management


Brought to you by:
The SPE Extrusion Division
Board of Directors


Drive Ratio

Modified on Monday, 02 February 2015 01:25 PM by mpieler Categorized as Extrusion Hints
Drive Ratio
Vol. 27 #3, December 2000

A change in screw design, within limits, can lower the torque requirements for a given flow rate, instead of changing drive ratio, which can be costly or impossible. This is generally accomplished by shorter lead to make the screw speed higher at the given rate. However, the drive must have excess speed capability to do this. Also, the channels will need to be deeper to maintain the same product temperature.

- Steve Derezinski, Eastman Kodak Co.

See also:
  • Screw design
  • Sizing extruder drives
  • Twin screw extrusion

Return to Extrusion Hints
Some of the icons were created by FamFamFam.