Gardner Bender Guide to Profitable Bending - Manual (Page 22)

Gardner Bender
Thinwall Bender Sets
1. Mark desired turn-up dimension (H) on straight length of thinwall.
Note: (H) Must be at least 2" longer than Set-back (S) shown
on chart.
2. Locate the size of thinwall you are bending in chart and
obtain dimension (S).
3. Measure back dimension (S) and mark thinwall.
4. Place thinwall in bender so mark (S) aligns with arrow on bending
shoe. Proceed to bend, reading angle on shoe at rear edge of
bending frome. (Angle on shoe includes approximate springback.)
S
H
H
35
Thinwall Nominal Set-back
Size (in.) (S)
Actual O.D.- 1.510
Centerline Radius of Bend-7 1 ⁄ 4 "
Actual O.D.-1.740
Centerline Radius of Bend - 8 1 ⁄ 8 "
Actual O.D. - 2.197
Centerline Radius of Bend - 9 1 ⁄ 8 "
8 7 ⁄
8
"
9 3 ⁄ 8 "
10 3 ⁄ 4 "
1 1 ⁄ 4
1 1 ⁄ 2
2
Kick Bend
Instructions for
One-shot PVC-coated
Conduit Benders
1. From the Diagonal Distance Chart (pg. 23), find diagonal distance
(D) which corresponds with the desired turn-up dimension (H). Mark
distance (D) from the end of a straight length of conduit.
2. Locate the size of conduit in chart to obtain Set-back measurement
(S) under the angle of bend desired.
3. Mark off measurement (S) on conduit as illustrated.
Mark (S) cannot be closer to ends of conduit than minimum distance
(L) shown in chart or ends will not be supported on the pivot shoes.
4. Place conduit in bender so mark aligns with arrow on bending shoe.
Proceed to bend, reading desired angle on optic angle gauge.
L L
D
S
Angle
R
H
D
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E-507 Guide to Profitable Bending rA.qxd 10/19/09 3:17 PM Page 43