Curving rolls are large metalworking machines that are used to roll sheets of metal into a round, cylindrical shape. Rolling metal into a circular shape is a gradual process and curving rolls will utilise their multiple rollers and several pass-throughs to gradually create a circular piece of metal.
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They come in a number of variations, with the main difference being whether they have 2, 3 or 4 rollers. The general design for most curving roll machines is fairly simple. At least 1 roll is powered by the gearbox, while another is adjusted with screws or fasteners of some kind. On 3 or 4 roll models, the fixed rollers go up to 2 or 3, giving you more stability and control over the shape of the metal.
The thickness and the type of metal you need to curve will determine which type of curving roll is best for your workshop. Simple 2 roll machines are great for quick, mass production, but they lack the finesse of the 3 or 4 roll machines. They also aren't suited for curving thicker pieces of metal.
On the other hand, 3 and 4 rollers machines are able to curve thicker metal, and the additional roller on the 4 roll models offers a bit more flexibility and precision when curving. Letting you get to the correct curvature quicker, and more accurately.
There are a number of specs you'll want to look out for when buying a curving roll machine. Specs like, curving system type, curving material length, curving material thickness, minimum rolling diameter and roll diameter. Of course, you'll also want to look for the overall dimensions of the machine to ensure it will fit in your workspace.
Unlike section rollers, curving rolls are generally several metres long, as they're designed to curve whole sheets and plates of steel. This means they will need a lot of space, so if you run a small workshop or a hobbyist you may want to look into a section roller instead.
There are a number of major brands that create quality curving roll machines, with some of the most popular being, Hafco, Steelmaster, Madison and Bramley.
If you're unsure which curving roll is best for your needs, contact your local dealer or seller to find out more.
