ROTARY BENDING VS. ROLL BENDING

Whether you are running a Rotary Bender, Roll Bender, Plate Bender, Press Brake or "fill in the blank"; you will discover, or already know that metal bending is truly an art.. But what is bending to the definitive point? Well bending in the metal fabrication world is to conduct a process that achieves a V-shape, U-Shape, channel shape, coil, or even a multi-radii shape with a piece of metal. Now one misconception that often arises when customers call us here at Quantum Machinery, is that a Roll Bender should be able to do anything a Rotary Bender can do, and vise versa, just to a lesser degree; so we would like to address that. In reality a Roll Bender and a Rotary Bender are like a pool and a spa, they are both fantastic at what they do, in fact what they do is almost similar, but they will perform best for what they were designed to do. 

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Roll Benders, sometimes referred to as Angle Rolls, specialize in putting "sweeps" or as a scholar would say, radii, on a single piece of material. Roll benders comprise of three rolls which are positioned into a pyramid-like form, the machine is used either in the vertical position, or for larger section bending, laid on it's back in the horizontal position. After the "top roll" is positioned with your material placed and aligned within the rolls, the rolls move which produce a distinct radii on your piece. Now not all Roll Benders have stationary bottom rolls with a moveable top roll; there are also roll benders that have a stationary top roll, while the bottom rolls are moveable, allowing you to pre-bend your part. Roll bending is used in countless industries, and plays a vital role in the success for many companies all over the world. Now Roll Benders, are not just for putting a nice arc in your material on a single point, or numerous points (Ex.1B); plenty of companies use their Roll Benders to produce coils, used in the Heat Exchanger industries, Architectural industries, and the list keeps coiling upwards, (no pun intended). Now here is where the misconceptions start and how the two beasts differ. What a Roll Bender cannot do is put a perfect 90 degree angle into a piece of material. As shown in Ex.1A:

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