Illustrated Bending Glossary - Greenlee 1800 Manual De Instrucciones

Illustrated Bending Glossary

Offset Height
Greenlee Tools, Inc.
1. back-to-back bend — any U-shaped bend formed by
two parallel 90° 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; refer to 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:
θ = angle of bend
r = the centerline bending radius of the bending shoe
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.
7. offset bend — two opposite bends with the same
degree of bend; used to avoid an obstruction.
8. offset height — the distance between the two legs of
an offset bend, measured perpendicular to the two legs;
also called amount of offset and depth of offset.
9. rise — the distance from the 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.
10. saddle — a three-bend or four-bend combination; used
to avoid an obstruction.
11. shrink — the amount of conduit "lost" when laying out
an offset bend working toward an obstruction.
12. springback — the amount, measured in degrees, that a
conduit or pipe tends to straighten after being bent.
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1800 Mechanical Bender
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