Durma HRB-3 Plate Roll
Three-roll plate bending machine with stress-relieved frame and conical bending capability down to 1.5x the top roll diameter
- Models
- HRB-3 2008 to HRB-3 4020 (32 models)
- Rolling Width
- 2050 to 4100 mm
- Bending Thickness (mild steel, 240 N/mm²)
- 7 to 44 mm
- Pre-Bending Thickness
- 4 to 35 mm
- Top Roll Diameter
- 200 to 430 mm
- Motor Power
- 7.5 to 45 kW
- Machine Weight
- 3,420 to 21,200 kg
- Roll Configuration
- 3-roll (top roll and two side rolls, all driven)
Applications
Where It Works
- Rolling cylinders and cones from light gauge through heavy plate where a cost-effective three-roll solution fits the production requirement.
- Conical bending of hoppers, tanks, and transition sections where tight cone geometry is required.
- Fabricators adding plate rolling capacity who need a proven three-roll machine with low maintenance and long service life.
Features
Built In
- Stress-relieved frame and body connections after welding eliminate internal stress that causes long-term twist and deformation on heavy rolling work.
- Angular bottom and side rolls allow conical bending down to 1.5x the top roll diameter, tighter cones than most three-roll machines on the market.
- Spherical roller bearings and bronze housings in all roll guides maintain precision through long production runs with minimal lubrication.
Specifications
Technical Specs
Capacity (Series Range)
- Models
- HRB-3 2008 to HRB-3 4020 (32 models)
- Rolling Width
- 2050 to 4100 mm
- Bending Thickness (mild steel, 240 N/mm²)
- 7 to 44 mm
- Pre-Bending Thickness
- 4 to 35 mm
- Top Roll Diameter
- 200 to 430 mm
- Motor Power
- 7.5 to 45 kW
- Machine Weight
- 3,420 to 21,200 kg
- Roll Configuration
- 3-roll (top roll and two side rolls, all driven)
Per-Model Specs
- HRB-3 2008
- Width 2050 mm · bending 10 mm / prebend 6 mm · top roll Ø200 · side rolls Ø180 · 7.5 kW · 3,420 kg · 3830×1160×1180 mm
- HRB-3 2010
- Width 2050 mm · bending 12 mm / prebend 8 mm · top roll Ø210 · side rolls Ø190 · 7.5 kW · 3,600 kg · 3830×1160×1180 mm
- HRB-3 2013
- Width 2050 mm · bending 15 mm / prebend 10 mm · top roll Ø230 · side rolls Ø200 · 11 kW · 3,800 kg · 3830×1160×1180 mm
- HRB-3 2016
- Width 2050 mm · bending 18 mm / prebend 13 mm · top roll Ø270 · side rolls Ø250 · 15 kW · 6,850 kg · 4260×1660×1590 mm
- HRB-3 2020
- Width 2050 mm · bending 22 mm / prebend 16 mm · top roll Ø300 · side rolls Ø270 · 18.5 kW · 7,300 kg · 4260×1660×1590 mm
- HRB-3 2025
- Width 2050 mm · bending 28 mm / prebend 20 mm · top roll Ø330 · side rolls Ø290 · 22 kW · 7,930 kg · 4260×1660×1590 mm
- HRB-3 2030
- Width 2050 mm · bending 33 mm / prebend 25 mm · top roll Ø360 · side rolls Ø330 · 30 kW · 12,640 kg · 4510×2060×2050 mm
- HRB-3 2035
- Width 2050 mm · bending 38 mm / prebend 30 mm · top roll Ø400 · side rolls Ø350 · 37 kW · 13,400 kg · 4510×2060×2050 mm
- HRB-3 2040
- Width 2050 mm · bending 44 mm / prebend 35 mm · top roll Ø430 · side rolls Ø380 · 45 kW · 14,300 kg · 4510×2060×2050 mm
- HRB-3 2506
- Width 2550 mm · bending 7 mm / prebend 4 mm · top roll Ø200 · side rolls Ø180 · 7.5 kW · 3,800 kg · 4330×1160×1180 mm
- HRB-3 2508
- Width 2550 mm · bending 10 mm / prebend 6 mm · top roll Ø210 · side rolls Ø190 · 7.5 kW · 4,000 kg · 4330×1160×1180 mm
- HRB-3 2510
- Width 2550 mm · bending 12 mm / prebend 8 mm · top roll Ø230 · side rolls Ø200 · 11 kW · 4,350 kg · 4330×1160×1180 mm
- HRB-3 2513
- Width 2550 mm · bending 15 mm / prebend 10 mm · top roll Ø270 · side rolls Ø250 · 15 kW · 7,550 kg · 4760×1660×1590 mm
- HRB-3 2516
- Width 2550 mm · bending 18 mm / prebend 13 mm · top roll Ø300 · side rolls Ø270 · 18.5 kW · 8,200 kg · 4760×1660×1590 mm
- HRB-3 2520
- Width 2550 mm · bending 22 mm / prebend 16 mm · top roll Ø330 · side rolls Ø290 · 22 kW · 8,900 kg · 4760×1660×1590 mm
- HRB-3 2525
- Width 2550 mm · bending 28 mm / prebend 20 mm · top roll Ø360 · side rolls Ø330 · 22 kW · 12,380 kg · 5010×2060×2050 mm
- HRB-3 2530
- Width 2550 mm · bending 33 mm / prebend 25 mm · top roll Ø400 · side rolls Ø350 · 30 kW · 13,300 kg · 5010×2060×2050 mm
- HRB-3 2535
- Width 2550 mm · bending 38 mm / prebend 30 mm · top roll Ø430 · side rolls Ø380 · 37 kW · 14,500 kg · 5010×2060×2050 mm
- HRB-3 3006
- Width 3100 mm · bending 7 mm / prebend 4 mm · top roll Ø210 · side rolls Ø190 · 7.5 kW · 4,500 kg · 4880×1160×1180 mm
- HRB-3 3008
- Width 3100 mm · bending 10 mm / prebend 6 mm · top roll Ø230 · side rolls Ø200 · 7.5 kW · 4,800 kg · 4880×1160×1180 mm
- HRB-3 3010
- Width 3100 mm · bending 12 mm / prebend 8 mm · top roll Ø270 · side rolls Ø250 · 11 kW · 8,280 kg · 5310×1660×1590 mm
- HRB-3 3013
- Width 3100 mm · bending 15 mm / prebend 10 mm · top roll Ø300 · side rolls Ø270 · 15 kW · 9,200 kg · 5310×1660×1590 mm
- HRB-3 3016
- Width 3100 mm · bending 18 mm / prebend 13 mm · top roll Ø330 · side rolls Ø290 · 18.5 kW · 9,850 kg · 5310×1660×1590 mm
- HRB-3 3020
- Width 3100 mm · bending 22 mm / prebend 16 mm · top roll Ø360 · side rolls Ø330 · 22 kW · 14,900 kg · 5560×2060×2050 mm
- HRB-3 3025
- Width 3100 mm · bending 28 mm / prebend 20 mm · top roll Ø400 · side rolls Ø350 · 30 kW · 16,150 kg · 5560×2060×2050 mm
- HRB-3 3030
- Width 3100 mm · bending 33 mm / prebend 25 mm · top roll Ø430 · side rolls Ø380 · 37 kW · 17,700 kg · 5560×2060×2050 mm
- HRB-3 4006
- Width 4100 mm · bending 7 mm / prebend 4 mm · top roll Ø270 · side rolls Ø250 · 11 kW · 9,710 kg · 6310×1660×1590 mm
- HRB-3 4008
- Width 4100 mm · bending 10 mm / prebend 6 mm · top roll Ø300 · side rolls Ø270 · 11 kW · 10,600 kg · 6310×1660×1590 mm
- HRB-3 4010
- Width 4100 mm · bending 12 mm / prebend 8 mm · top roll Ø330 · side rolls Ø290 · 15 kW · 11,780 kg · 6310×1660×1590 mm
- HRB-3 4013
- Width 4100 mm · bending 15 mm / prebend 10 mm · top roll Ø360 · side rolls Ø330 · 18.5 kW · 17,200 kg · 6560×2060×2050 mm
- HRB-3 4016
- Width 4100 mm · bending 18 mm / prebend 13 mm · top roll Ø400 · side rolls Ø350 · 22 kW · 18,900 kg · 6560×2060×2050 mm
- HRB-3 4020
- Width 4100 mm · bending 22 mm / prebend 16 mm · top roll Ø430 · side rolls Ø380 · 30 kW · 21,200 kg · 6560×2060×2050 mm
Drive & Controls
- Control
- PLC standard
- Drive System
- High-torque; all three rolls driven (top and side rolls by planetary reducer, hydraulic motor, and gear system)
- Synchronization
- Electronic synchronized rolls
- Hydraulics
- Bosch Rexroth valves with pressure safety valves
- Brake
- Hydraulic brake prevents sheet slip-back
Machine
- Body
- Stress-relieved welded steel construction, strengthened and lowered
- Rolls
- High-tensile carbon steel, induction hardened to HRC 54±2, crowned
- Roll Bearings
- Sealed spherical roller bearings with bronze housings
- Bending
- Pre-bending and conical bending; pre-bends both leading and trailing edge
- Conical Bending
- Down to 1.5x the top roll diameter
- Opening
- Fixed top roll with hydraulic opening cover
- Lubrication
- Manual (automatic centralized optional)
- Safety
- Safety wire around machine, emergency stop, CE
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