MRMH Hydraulic 3-Roll Plate Bending Machine
The MRMH hydraulic 3-roll plate bending machine from EBR METAL uses an initial-pinch roll layout. The plate is gripped between the top and bottom rolls while the back roll bends it, so the machine can pre-bend the plate edge.
The back and bottom rolls move hydraulically, a planetary gearbox drives the top and bottom rolls, and the top roll is released by a hydraulic drop-end. The range has 33 models with useful lengths from 650 to 3,050 mm.
• Useful length 650–3,050 mm • Top and bottom rolls Ø80–250 mm • Hydraulic roll positioning • Optional NC Control
The MRMH hydraulic 3-roll plate bending machine from EBR METAL uses an initial-pinch roll layout. The plate is gripped between the top and bottom rolls while the back roll bends it, so the machine can pre-bend the plate edge.
The back and bottom rolls move hydraulically, a planetary gearbox drives the top and bottom rolls, and the top roll is released by a hydraulic drop-end. The range has 33 models with useful lengths from 650 to 3,050 mm.
- Useful length 650–3,050 mm
- Top and bottom rolls Ø80–250 mm
- Hydraulic roll positioning
- Optional NC Control
How the MRMH Rolls a Plate
The MRMH has welded steel main frames. A motor with a brake drives the top and bottom rolls through a planetary gearbox, and hydraulic cylinders position the back roll and the bottom roll.
Because the plate is held between the top and bottom rolls from the start, the MRMH can pre-bend the leading edge before rolling. The capacity table gives pre-bending and bending capacities separately. With the conical bending device, the MRMH also rolls cones.
MRMH Product Gallery
MRMH General Features
- Welded steel main frames
- Motor-driven top and bottom rolls (planetary gearbox, two driven rolls)
- Main motor with brake
- Hydraulic movement of the back and bottom rolls
- Hydraulic drop-end
- Initial-pinch layout with pre-bending of the plate edge
- Manufactured in conformity with CE requirements
MRMH Standard Equipment
- Conical bending device
- Back roll with ball bearings for thin-sheet work
- SAE 1050 (CK45) certificated forged steel rolls
- Hardened rolls
- 2 digital readouts
- Mobile control panel
MRMH Optional Equipment
- NC control
- Overhead crane for large diameters
- Hydraulic lateral side supports for large diameters
- Ground and polished rolls
- Wire grooves on the roll ends
- Double-speed working
- Adjustable stepless speed
- Ejector system
- Hydromotor drive
NC Control
The NC control has a teach mode: the operator bends a part while the controller records each step, and the saved program repeats the same sequence on the next part.
MRMH Technical Specifications
| Model | Useful length (mm) | Pre-bending capacity x1.5/x5 (mm) | Bending capacity x1.5/x5 (mm) | Top & bottom roll dia (mm) | Back Roll Diameter (mm) | Min. bending dia x1.5/x5 (mm) | Motor power (kW) | Working speed (m/min) | Length (mm) | Width (mm) | Height (mm) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MRMH 650x80 | 650 | 2.5/3 | 3/3.5 | 80 | 80 | 120/400 | 1.1+0.75 | 5 | 1950 | 750 | 960 | 800 |
| MRMH 1050x80 | 1050 | 1.5/2 | 2/2.5 | 80 | 80 | 120/400 | 1.1+0.75 | 5 | 2350 | 750 | 960 | 920 |
| MRMH 1050x100 | 1050 | 2/2.5 | 2.5/3 | 100 | 90 | 150/500 | 1.1+0.75 | 6.5 | 2350 | 750 | 960 | 1120 |
| MRMH 1050x130 | 1050 | 2.5/3 | 3/5 | 130 | 130 | 195/650 | 2.2+1.1 | 5 | 2350 | 950 | 1100 | 1720 |
| MRMH 1270x80 | 1270 | 1/1.5 | 1.5/2 | 80 | 80 | 120/400 | 1.1+0.75 | 5 | 2570 | 750 | 960 | 950 |
| MRMH 1270x100 | 1270 | 1.5/2 | 2/3 | 100 | 90 | 150/500 | 2.2+1.1 | 6.5 | 2570 | 750 | 960 | 1150 |
| MRMH 1270x130 | 1270 | 3/4 | 4/5 | 130 | 130 | 195/650 | 2.2+1.1 | 5 | 3020 | 950 | 1110 | 1750 |
| MRMH 1270x150 | 1270 | 4/5 | 5/7 | 150 | 130 | 225/750 | 2.2+1.1 | 6 | 3020 | 950 | 1110 | 1875 |
| MRMH 1270x180 | 1270 | 5.5/7.5 | 7.5/10 | 180 | 150 | 270/900 | 4.0+1.1 | 5 | 3070 | 1100 | 1290 | 2100 |
| MRMH 1270x200 | 1270 | 8/10 | 10/12 | 200 | 180 | 300/1000 | 4.0+1.5 | 6 | 3070 | 1100 | 1290 | 2200 |
| MRMH 1550x80 | 1550 | 0.5/1 | 1/1.5 | 80 | 80 | 120/400 | 1.1+0.75 | 5 | 2850 | 750 | 960 | 1100 |
| MRMH 1550x100 | 1550 | 1/1.5 | 1.5/2 | 100 | 90 | 150/500 | 1.1+0.75 | 6.5 | 2850 | 750 | 960 | 1200 |
| MRMH 1550x130 | 1550 | 2.5/3.5 | 3.5/4.5 | 130 | 130 | 195/650 | 2.2+1.1 | 5 | 3300 | 950 | 1110 | 1850 |
| MRMH 1550x150 | 1550 | 3.5/4.5 | 4.5/6.5 | 150 | 130 | 225/750 | 2.2+1.1 | 6 | 3300 | 950 | 1110 | 2000 |
| MRMH 1550x180 | 1550 | 5/7 | 7/9 | 180 | 150 | 270/900 | 4.0+1.1 | 5 | 3350 | 1100 | 1290 | 2310 |
| MRMH 1550x200 | 1550 | 7/9 | 9/11 | 200 | 180 | 300/1000 | 4.0+1.5 | 6 | 3350 | 1100 | 1290 | 2450 |
| MRMH 1550x220 | 1550 | 8/10 | 10/12 | 220 | 180 | 330/1100 | 5.5+1.5 | 5 | 3500 | 1200 | 1370 | 3250 |
| MRMH 1550x250 | 1550 | 10/12 | 12/15 | 250 | 200 | 375/1250 | 7.5+1.5 | 5 | 3500 | 1200 | 1370 | 3600 |
| MRMH 2050x130 | 2050 | 2/3 | 3/4 | 130 | 130 | 195/650 | 2.2+1.1 | 5 | 3800 | 950 | 1110 | 2050 |
| MRMH 2050x150 | 2050 | 3/4 | 4/6 | 150 | 130 | 225/750 | 2.2+1.1 | 6 | 3800 | 950 | 1110 | 2250 |
| MRMH 2050x180 | 2050 | 4/6 | 6/8 | 180 | 150 | 270/900 | 4.0+1.1 | 5 | 3850 | 1100 | 1290 | 2690 |
| MRMH 2050x200 | 2050 | 6/8 | 8/10 | 200 | 180 | 300/1000 | 4.0+1.5 | 6 | 3850 | 1100 | 1290 | 2950 |
| MRMH 2050x220 | 2050 | 7/9 | 9/11 | 220 | 180 | 330/1100 | 5.5+1.5 | 5 | 4000 | 1200 | 1370 | 3750 |
| MRMH 2050x250 | 2050 | 8/10 | 10/12 | 250 | 200 | 375/1250 | 7.5+1.5 | 5 | 4000 | 1200 | 1370 | 4200 |
| MRMH 2550x150 | 2550 | 2/3 | 3/4 | 150 | 130 | 225/750 | 2.2+1.1 | 6 | 4300 | 950 | 1110 | 2500 |
| MRMH 2550x180 | 2550 | 3/4 | 4/6 | 180 | 150 | 270/900 | 4.0+1.1 | 5 | 4350 | 1100 | 1290 | 3070 |
| MRMH 2550x200 | 2550 | 4/6 | 6/8 | 200 | 180 | 300/1000 | 4.0+1.5 | 6 | 4350 | 1100 | 1290 | 3450 |
| MRMH 2550x220 | 2550 | 5/7 | 7/9 | 220 | 180 | 330/1100 | 5.5+1.5 | 5 | 4500 | 1200 | 1370 | 4250 |
| MRMH 2550x250 | 2550 | 6/8 | 8/10 | 250 | 200 | 375/1250 | 7.5+1.5 | 5 | 4500 | 1200 | 1370 | 4800 |
| MRMH 3050x180 | 3050 | 2/3 | 3/4 | 180 | 150 | 270/900 | 4.0+1.1 | 5 | 4850 | 1100 | 1290 | 3450 |
| MRMH 3050x200 | 3050 | 3/4 | 4/6 | 200 | 180 | 300/1000 | 4.0+1.5 | 6 | 4850 | 1100 | 1290 | 3950 |
| MRMH 3050x220 | 3050 | 4/6 | 6/8 | 220 | 180 | 330/1100 | 5.5+1.5 | 5 | 5000 | 1200 | 1370 | 4750 |
| MRMH 3050x250 | 3050 | 5/7 | 7/9 | 250 | 200 | 375/1250 | 7.5+1.5 | 5 | 5000 | 1200 | 1370 | 5400 |
Plate bending capacities are given for 260 N/mm² plate yield strength.
In the pre-bending and bending capacity columns, a/b gives the capacity at bending diameters of 1.5× and 5× the top roll diameter, respectively.
Choosing the MRMH
Choose the MRMH when you need hydraulic roll positioning and a hydraulic drop-end on an initial-pinch 3-roll machine. The MRMS has the same initial-pinch layout with a mechanical drive and a motorised back roll. For 4-roll machines, see the 4-roll range.
Tank and silo shells and machinery bodies can be rolled on the MRMH, depending on thickness, working length and diameter. Send us the material and grade, the thinnest and thickest plate, the working length, the minimum inside diameter and whether you need pre-bending or cones.
MRMH Hydraulic 3-Roll Plate Bending Machine in Operation
Watch the MRMH 1050 × 180 hydraulic 3-roll plate bending machine in operation. This video presents one specific machine from the MRMH family.
MRMH 1050 × 180 — Hydraulic 3-Roll Plate Bending Machine
Request a Quote for the MRMH
Send us the material type and grade, the thinnest and thickest sheet or plate, the maximum working length and the minimum inside diameter. A drawing or a photo of a sample part helps us propose a model and configuration.
Frequently Asked Questions About MRMH
What does initial pinch mean on the MRMH?
The plate is gripped between the top and bottom rolls while the back roll bends it. Because the plate is held from the start, the MRMH can pre-bend the plate edge.
Is the conical bending device standard on the MRMH?
Yes. Tell us the cone angle, both diameters, the thickness and the length so we can check the model.
Which options help with large diameters?
Hydraulic lateral side supports and an overhead crane are available for large diameters.
Is NC control available on the MRMH?
Yes. NC control is available as an option. Its teach mode can save a bending sequence for reuse.