Capacity depends on machine configuration and the groove geometry of the forming rolls. Heavy-duty joggling machines like the JM-140 typically handle mild steel up to 15 mm thick, with cylinder diameters ranging from around 1,000 mm to 5,000 mm. Harder materials or tighter grooves may reduce the maximum thickness.
A dedicated joggling machine is the right choice when production involves repeated cylinder end forming, when plate thickness exceeds what manual methods can reliably handle, or when tolerance consistency across batches is critical. The investment pays back through reduced scrap, faster cycle times, and eliminated rework. Machines with interchangeable forming rolls also adapt as new
In metal forming, a joggle is a stepped offset that lets two plates or cylinder sections overlap while the outer surface stays flush. The most common industrial use is in pressure vessel and tank construction, where joggled cylinder ends create a consistent lap joint for welding. Because the shape must be uniform around the part,
Joggling is a metal-forming process that creates a stepped offset at the end of a cylinder or sheet so two pieces can overlap and sit flush at a joint. In heavy industrial work it is used to form the flanged ends of pressure vessel cylinders before welding. The offset has to be uniform across the
A joggling machine forms a stepped offset at the end of a cylinder or plate by pressing the material between two profiled rolls. The cylinder rotates while the rolls apply controlled force, producing a consistent step geometry around the full circumference. The process is used in pressure vessel, tank, and process equipment manufacturing to prepare
Joggled grooves along the cylinder body - rillor in Swedish, like the hoops pressed into an oil drum at industrial scale - serve three functions in pressure vessel construction. They strengthen the shell against external collapse and internal stress, they drive the cylinder into a more accurate circular cross-section, and - most importantly for boiler
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