9 Bender Operation Manual
BACK SHOES- Back shoes, which are commonly referred
to as wiper dies come in pairs and are used together with
the radius dies during the bending process. These dies
play an important part as their primary
purpose is to form the outside radius of the bend. These
dies are used to clamp or retain the pipe as it is wrapped
around the radius die. Each back shoe is machined and
sized according to tubing diameter. The proper tubing size
is stamped on the top of each back shoe.
NOTE:
Back shoes should be kept clean and lightly oiled.
Never use the bender without back shoes in
place. Never use the bender as a vice or a press.
HALF SHOES AND THREE QUARTER SHOES Half
shoes and three quarter shoes do not come in pairs. Only
one is required. Half shoes are exactly half the length of a
standard back shoe and three quarter shoes are three
quarters the length. These smaller shoes are required
when an upcoming bend is less than ten inches from an
existing bend. The half/three quarter shoe will be used in
conjunction with the back shoe and placed only on the
side where the full back shoe may interfere with the
upcoming bend. (Details for the proper use of these tools
are explained in the BENDING section.)
NOTE:
Half shoes and three quarter shoes must be used
with radius dies and back shoes of the same
corresponding size.
HAC's & STED's- HAC's are Commonly referred to as
“adapter collars” while the STED's are referred to as “solid
expander dies”. HAC's are used to hold or clamp the tub-
ing in place when performing end-finishing Operations or
when using the STED's. These “adapter collars” are heat
treated which causes the inside threads or “teeth” to
become brittle. Because of this, these “teeth” have the
tendency to chip during normal use. This is normal and will
have no effect on their performance. The STED's or “solid
expander dies” are used to expand the tubing to exact
inside diameters and are also used to create male ball
expansions. Both tools are stamped and marked with their
appropriate tubing sizes. (Details on the proper use of
both tools is explained in the END FINISHING section.)
NOTE:
Keep collars free of debris and build up. Use a
wire brush periodically to clean the inside
threaded area. Keep all tooling lightly oiled.
Bender Operation Manual 9
Back shoe dies
CAUTION!
KEEP HANDS CLEAR when using all the tools
described in this manual. Improper use of these
tools may result in serious bodily harm
CAUTION!
All tooling described in this manual is heavy!
HANDLE WITH CARE. Always wear steel toe boots
when operating bender.
Adapter Collars
STED Expander dies
Half Shoe Three Quarter Shoe
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