Screw Shaft Material
CPM Extrusion Group offers a wide range of screw shafts which are made to machine and process
requirements to prevent overengineering or premature failure.
Since the trend to high torque and high speed extrusion equipment started, the CPM Extrusion Group was
ahead of the development and is a leader in high torque, rolled shaft technology producing shafts that can
withstand significant increases in load, torque, and temperature. The special choice of material and heat
treatment coupled with careful machining produces a top quality component. Also, the type of stress must
be taken into account.
Shafts Testing and Results
In a controlled environment, we conducted comparative tests of the cold-formed shaft and the competitive
shaft on the market.
Subkecting both shafts to uniform unidirectional torsion load cycles, these tests measured the fatigue life of
each shaft at elevated temperatures.
We rolled shafts outperformed the highest-rated shaft on the market by 25%. See these outstanding results
in the plot below.
