The workpiece in this video is genuinely large — overhead crane handling, wide V-block carriages and a gantry frame tall enough to swallow it. The ram works slowly and deliberately along the bar, correcting a few dominant bends under high pressure, with the screen showing force and runout together. Nothing on screen could be done on a bench press; this is purpose-built heavy machinery.
The frame is rated into the 1000-ton range, aimed at shafts and bars that would otherwise go out for subcontract correction or stay crooked. On material this stiff, springback is the enemy — thick steel can absorb a huge stroke and relax back — so the control applies compensation curves for the specific grade before pressing, the topic of the springback article.
It serves shipbuilding, oilfield, steel and railway supply chains: propeller shafting, drill collars, thick piston rods and big axles that no subcontractor nearby can handle. Foundations, loading method and frame tonnage are all planned around the actual part envelope and workshop access. The heavy end of the catalogue lives on the heavy-press catalogue.
If a part is too large for anything on your floor, send its dimensions and material and we will size a machine and outline foundation requirements at no cost. Contact Shangda.
1000-ton-range rating for the heaviest shafting
Gantry frame with wide V-block carriages
Crane loading and foundation planning included
Compensation curves for stiff, thick grades
Built for shipbuilding, oilfield and railway work
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