If bent steel shafts stack up beside a manual press, this footage shows the alternative. The part moves onto the supports — by hand on the CNC model, by gantry or robot on automatic versions — and rotates while probes map runout section by section. The control indexes the largest bend upward and the head applies one calculated stroke; probes then re-measure and order another if springback left residual bend. Only verified shafts reach the unload station.
Springback after quenching or induction hardening is why hand straightening drifts between batches; the closed loop fixes that — every stroke’s result is measured and the next corrected from feedback, settling hardened steel at 0.02–0.05 mm TIR on automotive parts and ≤0.02 mm on precision ones. More in our note on how the automatic straightening process works.
Typical work covers drive shafts, piston rods, and pump shafts whose heat-treatment distortion would otherwise hold up machining. Machines are specified to the part mix, from compact CNC units to 1000-ton-class presses for heavy rotors, with gantry loading and data logging optional. Plants supply 380–480 V three-phase; lead time is 60–120 days. Sizing guidance is in our buyer’s guide to choosing a shaft straightening machine.
Hardened-steel questions are quickest to answer with paperwork: forward material, target runout, and a typical part print, and our technical desk will confirm feasibility, band, and cycle time for you — reach our engineers here.
Closed-loop correction compensates for springback on heat-treated steel
TIR verified on every piece: 0.02–0.05 mm automotive, ≤0.02 mm precision
20–90 second cycles; one operator runs one or two CNC machines
Press capacity up to the 1000-ton class for large rotors and axles
380–480 V three-phase, 60–120 day delivery for built-to-order units
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