A primary feature of most key-driven rotary-draw bend dies; it is the shallow counterbore surrounding the post hole which mates with the pilot to center the bend die on the bend head’s axis of rotation.
FREE Tube-Bending Guide Download:
A complete guide to the principles of the 4-Step set-up for tube-bending tools
This is a printable handbook showing how to implement in four standardized steps the “forward mandrel” set-up for rotary-draw tube-bending machines and establish process control over the so-called black art. The procedure is based upon the guiding principle that the tools make the bend and takes advantage of the inserted design of modern mandrel tooling.