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
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.
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
Section bending shapes structural profiles (beams, angles, channels, tubes) by passing them through driven rolls that apply force along the profile's cross-section. Plate rolling bends flat metal plates by feeding them between large-diameter rolls that apply a distributed bending force across the plate width. The machines differ in roll configuration, force distribution, and the type
- Yes. SweBend's SEVEN CNC control system can be installed on most existing bending machines - both SweBend machines and machines from other manufacturers. The upgrade includes the control unit, sensors, and operator training. Most retrofits are completed within three days (including on-site training). The CNC system provides program storage, repeatable positioning, and a graphical
The right machine generally depends on four factors: what material you are bending (sections, plates, or tubes), the thickness and dimensions of the material, the required output geometry (curves, cylinders, cones, or custom shapes) and the production volume. SweBend's technical team evaluates your production requirements - including material type, batch size, and precision tolerances -
SweBend manufactures section bending machines, plate bending machines (plate rolls), and custom forming machines. Section bending machines handle beams, profiles, angles, and tubes. Plate rolls bend flat metal plates into cylinders, cones, and curved shapes. Custom forming machines are designed and built for specific materials, geometries, or production requirements that standard configurations cannot meet. All
SweBend is located in Hässleholm, Sweden.
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