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- service@herber.se
Tooling is crucial for tube bending performance. At Herber, we develop and manufacture tools at our production site in Värnamo, Sweden.
Further down below, you will find general information about common tube bending tools and how to set them up for optimal performance.
From a simple drawing to a complete tooling setup, we design and produce tools tailored to your bending needs. With full in-house development and manufacturing, we ensure consistent quality and short lead times. We produce a wide range of tube bending tools, including bend dies, clamp dies, pressure dies, mandrels, and wiper dies. We also offer unique multi-level tooling solutions to provide greater flexibility for complex tube geometries and demanding production requirements.
A tool treated with our own surface treatment Herbix.
To maximize both performance and durability, we support you with optimized tool design, but also in material selection and surface treatment. With the right choices we help you get the most out of your tools, and a long life-time. With our in-house developed Herbix surface treatment can extend tooling lifetime by up to 10 times, without compromising precision, control, or bending quality.
Made of hardened steel and with the fixed jaw screwed or welded for optimal transition between straight part and radius. For increased quality, the profile can be deepened or made elliptical
Made of hardened steel. Recommended lock length 3 x pipe diameter. For shorter lock lengths, the profile can be grooved for a better grip. In other cases, recesses are milled for bracket in bracket. In some cases without a straight span.
Made of hardened steel. If a fixed (stationary) support rail is used, the support rail length is recommended to be 4 x the diameter of the pipe. In case of running support rail or support rail push-on, the length is recommended to be 2 x the pipe diameter plus half the circumference of the profile board (bending to 180 degrees).
For tight radius and thin wall thicknesses. Manufactured from steel or Ampco.
For tighter radius and thinner wall thicknesses. Made in steel or Ampco.
The bending die is mounted so that the fixed jaw is parallel to the bending direction.
Check that the height matches the bending die and that the jaw is parallel to the bend die’s jaw. Adjust the locking pressure so that the pipe does not slip in the jaws during bending.
Insert a pipe into the clamp die and lock it in place. Slide the pressure die against the pipe and lock it in place. In principle, the pressure die should lie against the pipe without pressure. If necessary, re-adjust in small steps.
Select the type of mandrel according to the table. Set the mandrel so that a part of the mandrel body, max. approx. 0.5 x the inner diameter of the pipe, is in front of the center of the tool. Try different positions for best results.
Lock a tube between the clamp die and place it next to the pressure die. Then push the wiper die forward as far as possible, the tip should then be almost in front of the center of the bend die, and lock it in place. The wiper die should be parallel to the bend die or with the rear part slightly further away from the pressure die.
Stödsko rekommenderas när proportionen utvändig diameter/väggtjocklek ligger inom det grå fältet.
N = No mandrel
S = Standard mandrel
K = Ball mandrel
L = Chain mandrel (The number gives recommended number of links/balls in the chain mandrel.)