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Knuth

RBM Series

RBM is a series of 4-roll bending machines that are particularly suited for large sheet metal thicknesses. The advantage of this design is that the bending process can be done in one operation, and the operator only has to find one position for the side rolls. With special features such as conical bending that can be controlled via the control panel, the models in this series enable a wide range of applications in shipbuilding, steel and container construction.
RBM is a series of 4-roll bending machines that are particularly suited for large sheet metal thicknesses. The advantage of this design is that the bending process can be done in one operation, and th...
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Models
RBM 20/06 RBM 20/20 RBM 25/08 RBM 25/16 RBM 25/25 RBM 25/45 RBM 30/13 RBM 30/20 RBM 30/50 RBM 40/08 RBM 40/16
Working length
83 in
83 in
102 in
102 in
102 in
102 in
122 in
122 in
122 in
161 in
161 in
Plate thickness (max.)
0.24 in
0.79 in
0.31 in
0.63 in
0.98 in
1.77 in
0.51 in
0.79 in
1.97 in
0.31 in
0.63 in
Max. plate thickness for bending
0.16 in
0.63 in
0.24 in
0.51 in
0.79 in
1.38 in
0.39 in
0.63 in
1.57 in
0.24 in
0.51 in
Upper roll diameter
6 in
12 in
8 in
12 in
14 in
18 in
12 in
14 in
21 in
12 in
15 in
Lower roll diameter
6 in
11 in
7 in
11 in
13 in
17 in
11 in
13 in
20 in
11 in
14 in
Side roll diameter
5 in
8 in
7 in
8 in
10 in
14 in
8 in
10 in
17 in
8 in
12 in
Motor rating hydraulic pump
3 Hp
20.1 Hp
10.1 Hp
14.8 Hp
24.8 Hp
40.2 Hp
14.8 Hp
20.1 Hp
73.8 Hp
10.1 Hp
20.1 Hp
Overall dimensions (length x width x height)
163 in x 45 in x 41 in
179 in x 69 in x 59 in
183 in x 55 in x 52 in
199 in x 69 in x 59 in
199 in x 75 in x 67 in
236 in x 91 in x 102 in
218 in x 69 in x 59 in
219 in x 75 in x 67 in
263 in x 119 in x 116 in
258 in x 69 in x 59 in
286 in x 83 in x 78 in
Weight
5.104 lbs
15.400 lbs
10.120 lbs
17.842 lbs
25.960 lbs
66.000 lbs
19.360 lbs
29.040 lbs
88.000 lbs
21.846 lbs
45.760 lbs
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Working length
Plate thickness (max.)
Max. plate thickness for bending
Upper roll diameter
Lower roll diameter
Side roll diameter
Motor rating hydraulic pump
Overall dimensions (length x width x height)
Weight
RBM 20/06
Working length 83 in
Plate thickness (max.) 0.24 in
Max. plate thickness for bending 0.16 in
Upper roll diameter 6 in
Lower roll diameter 6 in
Side roll diameter 5 in
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RBM 20/20
Working length 83 in
Plate thickness (max.) 0.79 in
Max. plate thickness for bending 0.63 in
Upper roll diameter 12 in
Lower roll diameter 11 in
Side roll diameter 8 in
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RBM 25/08
Working length 102 in
Plate thickness (max.) 0.31 in
Max. plate thickness for bending 0.24 in
Upper roll diameter 8 in
Lower roll diameter 7 in
Side roll diameter 7 in
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RBM 25/16
Working length 102 in
Plate thickness (max.) 0.63 in
Max. plate thickness for bending 0.51 in
Upper roll diameter 12 in
Lower roll diameter 11 in
Side roll diameter 8 in
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RBM 25/25
Working length 102 in
Plate thickness (max.) 0.98 in
Max. plate thickness for bending 0.79 in
Upper roll diameter 14 in
Lower roll diameter 13 in
Side roll diameter 10 in
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RBM 25/45
Working length 102 in
Plate thickness (max.) 1.77 in
Max. plate thickness for bending 1.38 in
Upper roll diameter 18 in
Lower roll diameter 17 in
Side roll diameter 14 in
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RBM 30/13
Working length 122 in
Plate thickness (max.) 0.51 in
Max. plate thickness for bending 0.39 in
Upper roll diameter 12 in
Lower roll diameter 11 in
Side roll diameter 8 in
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RBM 30/20
Working length 122 in
Plate thickness (max.) 0.79 in
Max. plate thickness for bending 0.63 in
Upper roll diameter 14 in
Lower roll diameter 13 in
Side roll diameter 10 in
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RBM 30/50
Working length 122 in
Plate thickness (max.) 1.97 in
Max. plate thickness for bending 1.57 in
Upper roll diameter 21 in
Lower roll diameter 20 in
Side roll diameter 17 in
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RBM 40/08
Working length 161 in
Plate thickness (max.) 0.31 in
Max. plate thickness for bending 0.24 in
Upper roll diameter 12 in
Lower roll diameter 11 in
Side roll diameter 8 in
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RBM 40/16
Working length 161 in
Plate thickness (max.) 0.63 in
Max. plate thickness for bending 0.51 in
Upper roll diameter 15 in
Lower roll diameter 14 in
Side roll diameter 12 in
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