This close-up video shows the working zone of an automatic straightening machine for tube: cross-arranged straightening rollers, a measuring carriage and the CNC screen updating deflection in real time. As the tube rotates through the rollers, the carriage probes the surface and the controller calculates exactly where and how much correction is needed before any force is applied.
The system measures 2–3 points on short tubes and 5+ on long lengths, with extended beds carrying 5–8 probes, then applies correction in a 20–90 second automatic cycle covering Ø5–600 mm diameters in lengths of 100 mm–12 m. Resulting TIR runs 0.10–0.30 mm/m for general tube and 0.02–0.05 mm in automotive and precision applications.
Tube fabricators serving the automotive, cylinder, furniture and industrial equipment sectors use this data-driven approach to remove the guesswork of hand straightening, with every cycle recorded for quality traceability. The recorded readings can be reviewed batch by batch, giving quality managers documented evidence that every delivered tube met the agreed straightness limits before it ever leaves the factory floor for the customer.
Understand the measuring method in our article on TIR and straightness, explore our full Bar & Tube Straightening Machine offering, or book a live video call to watch a test in progress.
Cross-arranged rollers with real-time CNC deflection display
Measuring carriage probes 2–3 points on short parts, 5–8 on long beds
Automatic 20–90 second correction cycles
TIR to 0.02–0.05 mm for precision tube work
Every cycle recorded for quality traceability
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