CNC machine tools and sheet metal machinery
Durma Plate Roll Bending Machines Durma HRB 4 Series

Durma Plate Roll Bending Machines

Durma HRB 4 Series

Standard Equipment

  • Control unit with digital readout
  • Conical bending
  • Induction hardened rolls
  • Electronic side rolls control
  • Parallelism of the bottom roll by torsion bar
  • Stress relieved steel construction machine frame
  • All rolls mounted in bearing
  • Central rolls are driven with hydraulic motor and planetary gear box
  • Electrical and hydraulic protection against overloads
  • Hydraulic pressure adjustable bottom rolls
  • All axis positioning with adjustable speed at CNC machines
  • Top roll hydraulic opening

Optional Equipment

  • CNC control unit
  • NC control unit
  • Variable speed control
  • Oil cooling
  • Side supports
  • Vertical support (mechanical Ø 2 mt.x 1.5 t)
  • Vertical support (hydraulic Ø 3 mt.x 4 t)
  • Vertical support (hydraulic Ø 3 mt.x 6 t)
  • Material feed table
  • Changeable top roll for smaller diameters
    (Please ask for tie confirmation with machine type)
  • CE
  • Polished rolls

Durma Plate Roll Bending Machines Durma HRB 4 Series

Hardened Rolls And Crowning System 
Highly durable carbon steel (C45) rolls are machined by CNC Lathes with high precision without creating notch effect. Working surfaces of the rolls are induction hardened to HRC 54 2 Rolls are machined as crowning shape to compensate the deflections on the rolls during the bending.

Durma Plate Roll Bending Machines Durma HRB 4 Series

Conical Bending System 
By strong body and angular bottom and side rolls, wide angle & small diameter conical parts are easily bend. While other machines in the market are bending conical bending's of 3 times of top roll, Durma HRB-4 machines can bend conical bending of 1.5 times easily.

Durma Plate Roll Bending Machines Durma HRB 4 Series

Digital readout 
Ensures the machine's bottom and side rollers' synchronous operation. This process is provided via the PLC with 6-axis control and touch screen operator panel. Bending up to 5 steps of the program, is ease of use and saves time.

Durma Plate Roll Bending Machines Durma HRB 4 Series

NC Control 
In addition to the Digital readout control system, In teaching mode for the operator to bend all the steps are recorded respectively. In automatic mode all recorded movements are repeated, respectively by the machine. NC control system has the capacity to save 70 programs consisting of Max 100-steps.

Durma Plate Roll Bending Machines Durma HRB 4 Series

CNC Control 
CNC control system, in addition to the NC control system with its graphical control system allows the bending done step by step or automatically calculating the bending steps without the need for operator skill. Due to ready bending shapes polisentrik bending and twisting like an ellipse, is also easily done

Durma Plate Roll Bending Machines Durma HRB 4 Series

Rectilinear Rolls

Rolls and their positions are selected after long term engineering, tests and evaluation periods.

Side rolls are guided by linear beds which allow them to act as 2 independent axes moving on rectilinear plane. Better pre-bending and reduced spring back are achieved.

Durma Plate Roll Bending Machines Durma HRB 4 Series

Durma HRB 3 Series

Standard Equipment

  • Control unit with digital readout
  • Conical bending
  • Induction hardened rolls
  • Electronic side rolls control
  • Parallelism of the bottom roll by torsion bar
  • Stress relieved steel construction machine frame
  • All rolls mounted in bearing
  • Top roll hydraulic opening
  • Top roll driven with hydraulic motor and planetary gear box
  • Side rolls are hydro motor driven, Ø 360 mm with hydraulic motor and planetary gear box
  • Electrical and hydraulic protection against overloads

Optional Equipment

  • Variable speed control
  • Oil cooling
  • Side supports at both sides
  • Vertical support (mechanical Ø 2 mt.x 1.5 t)
  • Vertical support (hydraulic Ø 3 mt.x 4 t)
  • Vertical support (hydraulic Ø 3 mt.x 6 t)
  • Material feed table
  • Changeable top roll for smaller diameters
  • Extended rolls for section bending
  • CE
  • Polished rolls
Durma Plate Roll Bending Machines Durma HRB 4 Series

Durma MRB Series

Standard Equipment

  • Conical Bending
  • Bottom and back rolls manual
  • Top and bottom rolls powered by electrical motor, gearbox and gear drive
  • Pendant control panel
  • Cast iron frame
  • Precise bending with motor brake

Optional Equipment

  • CE
  • Digital readout
  • Motorised bottom roll
  • Motorised back roll
  • Hardened rolls
  • Grinded rolls
  • Extended rolls for section bending
  • Section rolls

Durma MRB-S Series

Standard Equipment

  • Conical Bending
  • Back rolls motorised
  • Top and bottom rolls with gearbox and gear drive
  • Pendant control panel
  • Hardened rolls
  • Stress relieved steel construction frame
  • Support system to increase bending quality at 2.5m and 3m machines
  • Precise bending with motor brake

Optional Equipment

  • CE
  • Digital readout
  • Motorised bottom roll
  • Grinded rolls
  • Extended rolls for section bending
  • Section rolls

Durma Plate Roll Machine HRB-4 Specifcations

 

Specifications subject to change without notice

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