Knuth 10.1HP 102” RBM 25/08 Hydraulic 4-Roller Roll Bending Machine 131906


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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.


  • Massive machine frame, based on an advanced design and many years of experience
  • Hydraulic safety chuck for easy removal of the part
  • Roller feed and adjustment of parallelism and taper at the control panel
  • All rollers are hardened and equipped with precision bearings
  • Hydraulically driven top and bottom rollers
  • Hydraulic components from Parker / Bosch
  • Electric components from Siemens and Telemanique
  • Minimum bending diameter = 3 x Ø of the top roller

Standard Equipment

  • Hardened rollers
  • Conical bending feature
  • Digital display
  • Control panel
  • Operator manual


  • Working Area
    • Plate thickness (max.): 0.31”
    • Working length: 102”
    • Max. plate thickness for bending: 0.24”
    • Upper roll diameter: 8”
    • Lower roll diameter: 7”
    • Side roll diameter: 7”
  • Drive Capacity
    • Motor rating hydraulic pump: 10.1 Hp
  • Measures and Weights
    • Overall dimensions (length x width x height): 183” x 55” x 52”
    • Weight: 10,120 lbs.


  • 133907 – Material Feed Table
  • 133908 – Side Support
  • 133909 – Center Support