Uni-Flex Mandrels

U.S. PATENTS 3190106 AND 3408850

Patented by H&H Tooling in 1962 the Uni-Flex mandrel has become the world standard for internal ball style mandrels. The unique ball and socket linkage design provides unmatched setup and bending characteristics. Available in standard pitch, thin-wall and ultra-thin-wall styles for every conceivable wall factor.

Balls can be added or removed with ease: parts are available from stock for field service.

Mandrel balls flex in any plan, accommodating compound bends and eliminating setup time for plane alignment.

Balls will flex to handle bends on centerline radii down to 1 x tube O.D.

Provides maximum wall support as balls over-lap and are designed on pitch of approximately ½ tube O.D. or less.

Balls are held by detents in a straight-line position for easy loading of tube.

Ball and socket design provides maximum tensile strength to resist stretching or breakage.

Balls are free to rotate, distribute wear and give maximum tool life.

Standard Mandrel Assembly

Thin Wall Mandrel Assembly