![]() The radius of a roll bent tube is no longer determined, however, by a matrix with fixed measurements, but by a set of three rollers that approach or distance themselves from one another, cold shaping the tube and impressing the desired radius.Īs for bending, we speak of the mean radius in case of round tubes, and of inner radius for tubular elements, but to calculate the feasibility formulas we will always have to refer to the mean radius. ![]() To remain in the same area as the previous example, for a tube Ø70 the minimum roll bend radius will be 350 mm and the maximum will be a theoretically infinite value. AND10111 Standard MS33611 Standard Radius Block Close Bend Part No. Unlike the bend radius, the roll bend radius is much greater and goes from 5 times the diameter of the tube to infinity. Close bend radius blocks These blocks have a threaded pin which threads directly into both Triple-Lok and Ferulok (Seal-Lok requires an adapter) tube fitting nuts, permitting a first bend very close to the end of the tube. This is decisive for the purposes of feasibility of processing. They are the same as for the bend radius, but the coefficients that we will have to consider are different. Note: Sizes 20 and 24 close bend radius blocks requires the removal of the clamp arm before installation. ![]() Also when it comes to roll bending (or tube rolling) tubes, there are formulas for evaluation of the roll bend radius. ![]()
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