Page 36 of catalogue Fitting Tools of Rothenberger Werkzeuge GmbH

Bending Tables
Example of pull-bending:
Lw = 1200 mm Aw = 30 mm Tube dia. 12 mm. 90° bend ROBEND H + W Required: Leg length Lay out length Solution: Leg length Lay out length

1
L1 = Lw - AW a= L1 - LR = 1200 - 30 = 1170 mm = 1170 - 40 = 1130 mm

L1 = ? mm a = ? mm

wall

AW R LW a L1 L1
a

L1 / L2 = leg length a = lay out length L = total length LW = length / tube end - wall AW = Dimension / wall - tube middle L1 = LW - AW a = L1 - LR L = L1 + L2 - LM

L2

L2

All given dimensions are only a guide and depend on material and wall thickness.

L1

a

L1 a

L1

a

L2

a = lay out length L = total length L = L1 + L2 a = L1 - LR

a = lay out length L = total length L = L1 + L2 - LM a = L1 - LR

a = lay out length L = total length L = L1 + L2 + LM a = L1 - LR

MINIBEND
Tube dia. /wall thickness Bending radius R (mm) mm /inch 6 8 10 1/4” 5/16” 3/8” 25.0 24.0 23.0 25.0 24.0 23.0

at 45°
Reserve length L R mm 10.4 9.9 9.5 10.4 9.9 9.5 Minimum length L M mm 1.0 1.0 1.0 1.0 1.0 1.0

at 90°
Reserve length L R mm 22.0 32.0 32.0 22.0 32.0 32.0 Minimum length L M mm 10.0 15.0 15.0 10.0 15.0 15.0

at 180°
Reserve length L R mm 22.0 32.0 32.0 22.0 32.0 32.0 Minimum length L M mm 26.0 34.0 34.0 26.0 34.0 34.0

Standard Tube Bender
For tube dia. mm /inch 6 8 10 12 14 15 16 18 1/4” 5/16” 3/8” 1/2” 5/8” Bending radius R (mm) 18.0 24.0 30.0 36.0 47.5 54.0 58.0 66.0 18.0 24.0 30.0 42.0 58.0

at 45°
Reserve length L R mm 7.0 9.5 11.5 14.0 18.5 21.0 22.5 25.5 7.0 9.5 11.5 16.5 22.5 Minimum length L M mm 0.8 1.0 1.3 1.5 2.0 2.3 2.5 2.8 0.8 1.0 1.3 1.8 2.5

at 90°
Reserve length L R mm 18.5 24.0 30.5 36.5 48.5 56.0 64.0 68.0 18.5 24.0 30.5 49.5 64.0 Minimum length L M mm 8.0 12.0 14.5 15.0 20.5 24.5 28.5 31.0 8.0 12.0 14.5 22.5 28.5

at 180°
Reserve length L R mm 18.5 24.0 30.5 36.5 48.5 56.0 64.0 68.0 18.5 24.0 30.5 49.5 64.0 Minimum length L M mm 20.0 27.0 34.0 37.5 52.5 58.0 67.0 72.0 20.0 27.0 34.0 53.0 67.0

MULTIBEND
For tube dia. mm 8 10 12 14 15 16 18 Bending radius R (mm) 24.0 30.0 36.0 42.0 48.0 48.0 54.0

at 45°
Reserve length L R mm 9.5 12.0 14.0 16.5 19.0 19.0 21.0 Minimum length L M mm 1.0 1.3 1.5 1.8 2.0 2.0 2.3

at 90°
Reserve length L R mm 24.0 30.5 36.5 42.0 48.0 48.0 54.0 Minimum length L M mm 10.0 14.5 15.5 19.5 22.0 22.0 26.0

at 180°
Reserve length L R mm 24.0 30.5 36.5 42.5 48.0 48.0 54.5 Minimum length L M mm 26.0 32.5 37.5 44.0 53.0 53.0 58.0

43