Illustrated Bending Glossary - Greenlee 555BAT Instruction Manual

Illustrated Bending Glossary

1. back-to-back bend — any
U-shaped bend formed by two
parallel 90-degree bends with
a straight section of conduit or
pipe between the bends
2. center-to-center distance —
the distance between the
successive bends that make
up an offset or a three-bend
saddle
3. developed length — the actual
length of pipe that will be bent;
see distance "d" in the
illustration at left
4. gain — the difference between
the straight-line distance (a + a)
and the shorter radial distance,
(d) where:
r = the centerline bending
5. kick — single bend of less
than 90
6. leg length — the distance from
the end of a straight section of
conduit or pipe to the bend;
measured from the end to the
outside edge of the conduit
or pipe.
Greenlee Textron / Subsidiary of Textron Inc.
555BAT™ Battery-Powered Bender
= angle of bend
radius of the bending shoe
7. offset bend — two opposite
8. offset height — the distance
Offset Height
9. rise — the distance from the
10. saddle — a three-bend or
11. shrink — the amount of conduit
12. springback — the amount,
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bends with the same degree
of bend; used to avoid an
obstruction
between the two legs of
an offset bend, measured
perpendicular to the two legs;
also called amount of offset
and depth of offset
end of a straight section of
conduit or pipe to the bend;
measured from the end to
the center line of the conduit
or pipe. Also called stub or
stub-up.
four-bend combination; used
to avoid an obstruction
"lost" when laying out an offset
bend working toward an
obstruction; see the explanation
under Offset Bending in
this manual
measured in degrees, that a
conduit or pipe tends to
straighten after being bent