The footage zooms in on a mid-size hydraulic press correcting a transmission shaft. You can watch the operator roll the part on its supports, read the runout on the screen, and bring the ram down on the high spot while the live readout shows the bend closing stroke by stroke. A brief dwell at the bottom lets the steel settle before the probe verifies the result.
What counts as straight depends on where the part lives. General machinery is fine at 0.10–0.30 mm per metre, automotive shafts are held to 0.02–0.05 mm total indicator runout, and precision spindles need ≤0.02 mm. The machine hits those numbers largely because it does not guess at springback — stored material curves set the first stroke near target, as the springback compensation guide explains.
Workshops running mixed work — lead screws, spline shafts, tubular axles and cold-drawn bars — get one bed that covers short, stubby parts and long bars alike, with manual and CNC controls both offered so a shop can automate later rather than replacing the frame. Supports, force and probe positions are set around the actual part list. Bar and tube users can compare heavy frames in the hydraulic press section.
Share your drawings and target runout and we will tell you which frame and probe layout your parts need, with no obligation. Contact Shangda to start the conversation.
TIR to 0.02–0.05 mm on automotive parts, ≤0.02 mm precision grade
Live runout readout as the bend closes
Touch-screen entry of diameter, length and tolerance
Manual or CNC control versions available
Springback data stored by material
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