Ercolina Medi Bender, Instruction Manual, Page: 17 / 41

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Art.070 User Guide EN 16
SECTION III
MACHINE USE
3.1 MAIN CONCEPTS
Bending angle: Tube bending angle expressed in degrees
Spring back angle: Due to the material elasticity effect the tube tends to “spring back” to its original
shape when it is bent
Bending radius: It must not be confused with the angle, it is measured from the tube center to the
bending center
The Ercolina system is able to correct the bending angle according to the material used
3.2 ACCESSORIES
Formers and counterbending dies are made of aluminum and steel according to the material to bend. Ask
your dealer.
For part identification refer to
Table 2.1.1 included on page 10.
3.2.1 ACCESSORY CHOICE
Choose the correct former and counterbending die to bend your tube. Verify that the external diameter is
exactly equal to the one stamped on the former and on the counterbending die.
3.2.2 ACCESSORY ASSEMBLY
Insert former and counterbending die on their respective positions.
Pay attention when installing steel formers: hold the formers from their edge side and NOT from the
bottom. Make sure the former point of reference is aligned with the hexagonal shaft point of reference and
fix the counterbending die to the support by rotating the small knob.