Precision is the subject of this video: an automatic tube straightening machine holding tight tolerances on tube destined for automotive assemblies. The screen shows measured runout before and after each correction pass, with the CNC converging on target automatically and stopping the moment the tube is within spec — never over-straightening.
On precision work the machine reaches TIR of 0.02–0.05 mm, and it can hold ≤0.02 mm on the most demanding components, while general fabrications run at 0.10–0.30 mm/m. Tubes from Ø5–600 mm and 100 mm–12 m are processed in 20–90 second cycles, with 5+ measurement points on long beds to catch every local deviation.
This level of control serves automotive tier suppliers making steering, seat and exhaust components, plus cylinder manufacturers and precision roller builders — customers whose parts are measured again downstream and whose straightness claims must be defensible. The footage includes the operator pulling the cycle history for one finished tube, showing each correction pass and the final measured value stored against that piece for full quality traceability.
Learn how those numbers are measured in our TIR and straightness guide, explore Bar & Tube Straightening Machines, or send a print for a tolerance feasibility review.
CNC stops automatically when target TIR is reached
0.02–0.05 mm for automotive parts, ≤0.02 mm for precision work
Before-and-after runout shown on screen for every tube
5+ measurement points on long beds catch local deviation
Ø5–600 mm capacity with 20–90 second cycles
SITE：
