We design and manufacture crankshaft hardening machines.

The photo shows an automobile V6 engine crankshaft induction hardening and reheating machine.

This machine is installed in-line at an engine plant.
It receives the workpiece from the previous process, performs hardening
automatically, and sends the workpiece to the next process.


The workpiece is loaded from the port on the right.
First the pins are induction hardened at the right and center stations,
followed by the journals at the left station.
Finally the work is unloaded from the port of the left.


This machine performs flat hardening, which in general is a simpler process,
but to achieve the specified short cycle time of under 50 seconds,
the machine was designed with two converters and three hardening stations
for high productivity.