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4-roll HRB-4 (hydraulic)

DURMA HRB-4 Series Roll Bending Machine

“Fast, Accurate and Easy to Operate”
Four plate rolls are more precise, productive, versatile, faster,
safer and easier to operate than three roll machines.
They are less dependent on operator competence.
Ideal for bending plates up to 200 mm thick.

Robust machine body and construction ensure long machine life and low maintenance. High torque drive system allows HRB to achieve shorter cycle times. User friendly control units makes it possible to be less dependant on operator competence.

HRB-4 Roll Bending today, tomorrow and forever with you.





Up to 8000 mm Bending Lenghts
Up to 200 mm Bending Thickness
Accurate, Easy to Operate, Fast and Reliable
Flat zone of the part is minimized
Pre-bending, conical bending and ellipse bending can be done easily
Double pre-bends (both ends) in one pass
The sheet reference is maintained by tightening of top and bottom rolls
Most desirable bending operation for CNC applications
More efficient for cycle times
Hydraulic and electrical systems have been safeguarded from overloading and require minimum maintenance.
Hydraulic and electrical components are modual and designed according to world standards

PLC control system
Conical bending
Induction hardened rolls
Stress relieved steel construction body
High tensile carbon steel rolls
Sealed spherical roller bearings
2 rolls drive system (Upper roll Ø 200 mm – Ø 430 mm)
4 rolls drive system (Upper roll <Ø 430 mm)
Fixed top roll (Upper roll Ø 200 mm – Ø 430 mm)
Hydraulic opening cover
Welding possibility on the machine
Electronic synchronized rolls
Mechanical synchronized bottom rolls
Adjustable pinching pressure
Overload protection
Safety wire around the machine and emergency stop button on control panel
Manual lubrication
User manual

NC Control Unit
CNC Control Unit
Polished rolls
Adjustable turning speed (NC, CNC Standard)
Vertical or horizontal working position
Hydraulic vertical support preparation (Full / Mechanical)
Hydraulic vertical support
Side support preparation (Full / Mechanical)
Hydraulic side supports
Hydraulic side supports with double joint
NC included side and vertical supports
Interchangable top roll
Longer rolls for profile bending and special bending rolls
Oil cooling
Oil heating
Automatic centralized lubrication system
Hydraulic roll crowning system
Plate feeding platform with alignment unit
Special plate support systems
Loading, unloading systems
Seperate power cabinet
Special solutions for wind tower projects

MODEL
TYPE
                                        Bending Lenght Min. Int. Dia
Ø Dmin
Top RollBottom RollSide RollsLenghtWidthHeightWorking HeightWeightMotor PowerHydraulic Tank Capacity
Ødx5Ødx1,5Ødx5Ødx1,5
 Bending CapacitiesBending CapacitiesPre-Bending CapacitiesPre-Bending Capacities
L (mm)s (mm)s (mm)S (mm)S (mm)Ød (mm)Ø (mm)Ø (mm)U (mm)G (mm)Y (mm)C (mm)(kg)(kW)l
HRB-4 15150155065541501501303100970114087524905,590
HRB-4 15170155086651701701503100970114086528505,590
HRB-4 2015020505443150150130360097011408752600490
HRB-4 20170205065541701701503600970114086527505,590
HRB-4 202002050866520020019038301160120084043507,5160
HRB-4 2022020501088622022018038301160120083046507,5160
HRB-4 2024020501310108240240190383011601200820500011160
HRB-4 202602050161313102602602304260166016001160780015400
HRB-4 202702050181515122702702304260166016001155805015400
HRB-4 202802050201616132802802404260166016001150830018,5400
HRB-4 203002050231818153003002404260166016001140880018,5400
HRB-4 203202050252020163203202504260166016001130910022400
HRB-4 203402050282323183403402604260166016001120980022400
HRB-4 2036020503025252036036027045102060205015101420030600
HRB-4 2038020504030302538038029045102060205015001510030600
HRB-4 2040020504535353040040030045102060205014901600037600
HRB-4 2046020505040403546046038047102210217015901800045800
HRB-4 252002550655420020019043301160120084050007,5160
HRB-4 252202550866522022018043301160120083053507,5160
HRB-4 25240255010886240240190433011601200820570011160
HRB-4 25260255013101082602602304760166016001160865015400
HRB-4 252702550151212102702702304760166016001155895015400
HRB-4 252802550161414122802802404760166016001150930018,5400
HRB-4 253002550201616133003002404760166016001140980018,5400
HRB-4 2532025502318181532032025047601660160011301050022400
HRB-4 2534025502520201634034026047601660160011201120022400
HRB-4 2536025502823231836036027050102060205015101520030600
HRB-4 2538025503025252038038029050102060205015001605030600
HRB-4 2540025504030302540040030050102060205014901660037600
HRB-4 2546025504535353046046038052102210217015902000045600
HRB-4 302203100655422022018048801160120083059007,5160
HRB-4 3024031008665240240190488011601200820645011160
HRB-4 302603100108862602602305310166016001160970015400
HRB-4 302703100131010827027023053101660160011551005015400
HRB-4 3028031001512121028028024053101660160011501055018,5400
HRB-4 3030031001616141230030024053101660160011401110018,5400
HRB-4 3032031002016161332032025053101660160011301140022400
HRB-4 3034031002318181534034026053101660160011201200022400
HRB-4 3036031002520201636036027055602060205015101675030600
HRB-4 3038031002823231838038029055602060205015001800030600
HRB-4 3040031003025252040040030055602060205014901880037600
HRB-4 3046031004030302546046038057602210217015902200045600
HRB-4R 3046031004535353046044036056902280237517703150037+22850
HRB-4R 3048031005040403548045537056902280237517603500045+22850
HRB-4R 305203100604545405205004106085263027902045450002×37+301100
HRB-4R 305803100705555455805604406085263027902015500002×37+301100
HRB-4R 306503100806060506506105006370324036602825720002×45+111700
HRB-4R 30760310010080807076072060071003800429033331100002×55+112200
HRB-4 402804100866428028024063101660160011501160015400
HRB-4 4032041001088632032025063101660160011301400018,5400
HRB-4 403604100121010836036027065602060205015101950022600
HRB-4 4038041001612121038038029065602060205015002050030600
HRB-4 4040041002016161240040030065602060205014902200037600
HRB-4 4046041002520201646046038067602210217015902500045600
HRB-4R 4046041003025252046044036066902280237517703900037+22850
HRB-4R 4048041004030302548045537066902280237517604300045+22850
HRB-4R 405204100453535305205004107085263027902045500002×37+301100
Bending capacies valid for multisteps bending method.
Technical datas can be changed by DURMAZLAR MAK.SAN.TIC.A.S. without notice . Reproducing and releasing without getting permission from DURMAZLAR MAK.SAN.TIC.A.S. are prohibited.
The mentioned values above is only works for 240 N/mm²
Different material and widths ; can be calculated by DURMA Roll Bending Calculator
Conic bending capacities depends on the angle and half value of mentioned values above
Weight and motor powers optionally goes higher levels with additionals