Feedscrews
Our feedscrews are designed to use a larger centering pin, which
better supports the weight of these approximately 300 pound
feedscrews. Our feedscrews use a spring that not only allows the
grinder to cut cleaner, but also reduces pin hole wear. The AISI
1045 steel flighting on our feedscrews is heat treated in a manner
that hardens the cutting edge while leaving the base material
undisturbed. This method produces a long transformation area where
the steel toughness, its yield strength, is not compromised. When a
small piece of metal falls into our machine, the edge on the
feedscrew will deform, but not break.
When we rebuild a feedscrew, we do not simply weld it up like some
other companies do! We turn the feedscrew down, an then weld a new a
AISI 1045 steel bar over the existing flighting. The feedscrew is
then ground and machined to the proper outside diameter and heat
treated. This process gives us a wide, virgin steel cutting edge.
The pressure flights are also rebuilt (or replaced if needed) and
the drive spline and pin hole sleeve are typically replaced. Our
rebuilding process allows us to rebuild a feedscrew many times
before it must be replaced.