The photo shows the single rotating axis hardening station of
an induction hardening machine for automobile transmission parts.

The workpiece, a clutch release fork (clutch lever), is rotated
while heating the inner surface of the center hole.

Our original small spiral multi-turn coil to treat the extremely difficult
multi-diameter hole inner surface.

After heating, the workpiece is carried down out of the coil
and spray quenched by jackets on both sides.