Gardner Bender Hand Benders How To Guide - Manual (Page 2)

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Measure height of offset (D) and multiply by a constant
multiplier per angle of bend (see Table 2) to determine
distance between bends. Measure length (L) from end
of conduit to offset and add shrinkage (see Table 3).
Mark this length on conduit (C). Subtract distance
between bends and mark point (X). Using arrow on
bender, make desired bend at point (X). Reverse
bender and repeat at point (Y).
Back-to-Back Bend
90° Bend
“Dog Leg” Bend or “Kick”
Leg Length
Offsets
Rise or “Stub-ups”
Segment Bend
Concentric Bends
Hickey bends are a series of
segment bends (not to exceed
10° per bend) for sharper than
standard code radius bends.
Bending success with a hickey
is directly proportionate to the
operator’s bending skill.
Industry Standard Style
30° bend when handle is
straight up
Bigger Foot Pedal
40% larger
Bigger Hook
With a 5x durability factor
More Foot Room
Allows for a booted foot
Recommended Angle Bends
per Offset Depths
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(For pre-determined values use Table 3)
This chart is a guide for computing shrinkage.
Remember, shrinkage values are only used when
working into objects, not away.
Angle of Bend
Constant
Multiplier
Shrinkage / Inch (25.4 mm)
of Offset Depth
10° 6.0 1/16" (1.6 mm)
22-1/2° 2.6 3/16" (4.8 mm)
30° 2.0 1/4" (6.4 mm)
45° 1.4 3/8" (9.5 mm)
60° 1.2 1/2" (12.7 mm)
Offset
Depth Angle of
Bend
Distance
Between Bends
Conduit
Shortens
1"
(2.5 cm)
10°
6"
(15.2 cm)
1/16"
(1.6 mm)
2"
(5.1 cm)
22-1/2°
5-1/4"
(13.3 cm)
3/8"
(9.5 mm)
3"
(7.6 cm)
30°
6"
(15.2 cm)
3/4"
(19.1 mm)
4"
(10.2 cm)
30°
8"
(20.3 cm)
1"
(25.4 mm)
5"
(12.7 cm)
45°
7"
(17.8 cm)
1-7/8"
(47.6 mm)
6"
(15.2 cm)
45°
8-1/2"
(21.6 cm)
2-1/4"
(57.2 mm)
7"
(17.8 cm)
45°
9-3/4"
(24.8 cm)
2-5/8"
(66.7 mm)
8"
(20.3 cm)
45°
11-1/4"
(28.6 cm)
3"
(76.2 mm)
9"
(22.9 cm)
45°
12-1/2"
(31.8 cm)
3-3/8"
(85.7 mm)
10"
(25.4 cm)
45°
14"
(35.6 cm)
3-3/4"
(95.3 mm)
Offset Bend Calculations 3-Point Saddle Bends Correcting Overbends Definition of Terms Used
Hickey Bends
Big Ben ™ Features
Because it is flexible, EMT is easy to
straighten and will not break if handled
as follows. Slip the bender handle over
the stub and pull back the desired degree(s)
from the bend. For larger conduit sizes, the
benderhandle can be replaced by a pipe of
correspondingly larger diameter or one small
enough to fit inside the conduit. Big Ben™
features bend-back channel (see below).
Bend-Back Channel
Easily corrects conduit
over-bends Vise-Mate™
Holds conduit while cutting
or reaming
Table 2
Table 3