The Van Dorn Demag Corp. goes as far back as the 1940’s. They are one of the biggest machine makers for the plastics injection molding industry. We carry most injection molding screw replacements OEM prints for any Van Dorn, Demag or Newbury machine. Our injection molding screws are designed to work with the OEM designs.

Following the OEM designs on our injection molding screw replacements help our customers be able to have another source to call to if they need a ring for any size our ring sealing surface will fit with all Demag, Vandorn, Sumitomo and Newbury screws. CPM9v is a US made material and can not be sold out side the US. So if a aftermarket re-seller or catalog house bring parts in from out side the US (most Do) and says it is CPM material questions what they say. On glass filled applications CPM9v is the best on the market.

Using the correct injection molding screw will keep the shear down and secondary heat out of the mold and stop degradation of the material and help to give the most consistent process and highest production level.


Screws and Barrel for Van Dorn Injection molding machines.
Injection Unit  Screw Diameter Shot Size in oz L/D Spec.
28 28 2.4 20/1
A35 35 5 22.8/1
B35 40 7 20/1
C35 45 9 17.7/1
A40 40 8 22.5/1
B40 45 10 20/1
C40 50 12 18/1
A45 45 11 22.2/1
B45 50 13 20/1
C45 55 16 18.2/1
A50 50 17 22/1
B50 55 20 20/1
C50 65 28 16.9/1
A55 55 21 23.6/1
B55 65 29 20/1
C55 70 34 18.6/1
A65 65 31 21.5/1
B65 70 36 20/1
C65 80 47 17.5/1
A70 70 41 22.8/1
B70 80 54 20/1
C70 90 68 17.7/1
A80 80 60 22.5/1
B80 90 76 20/1
C80 100 95 18/1
A90 90 86 22.2/1
B90 100 105 20/1
C90 110 127 18.2/1
A100 100 116 22/1
B100 110 140 20/1
C100 125 181 17.6/1
A110 110 179 22.7/1
B110 125 231 20/1
A125 125 289 22.4/1
B125 140 362 20/1
A140 140 414 22.9/1
B140 160 541 20/1
A160 160 609 22.5/1
B160 180 771 20/1
A180 180 585 22.1/1
B180 200 1055 20/1