HEVO Dual Technology: The Next Generation of MHD Hydraulic Motors
Key Metrics at a Glance
Metrics | MHD06 | MHD09 |
|---|---|---|
| Max. Pressure | 450 bar | 450 bar |
| Max. Power | 100 kW | 150 kW |
| Max. Torque | 6500 N.m | 7000 N.m |
| Max. Speed | 400 RPM | 420 RPM |
| Max. Efficiency | Up to 96% | Up to 96% |
| Displacement | 388–630 cm³/rev | 602–978 cm³/rev |
Unlock More Performance from Hydraulic Power
Hydrostatic transmissions have long been the preferred choice for demanding mobile machinery. With HEVO Dual Technology, Poclain takes hydraulic motor performance even further.
The new MHD motor range is engineered for applications that require:
✅ High power
✅ High speed
✅ Maximum productivity
✅ Long-duty-cycle operation
while maintaining the torque needed to handle high-resistance loads.
Ideal for applications such as drill heads, harvester heads, and demanding equipment, MHD motors help machine manufacturers increase productivity, improve efficiency, and simplify machine architecture.
Talk to our experts about your application
Conventional Technology vs HEVO MHD
Feature | Conventional Hydraulic Radial Piston Motor | HEVO MHD Hydraulic Motor |
| High-speed efficiency | Standard | Optimized: +10 efficiency points |
| Power & speed capability | Limited in reduced displacement | High power maintained at high speed |
| Load distribution | Concentrated loads | Balanced loads across all pistons and cam lobes |
| Multispeed Concept | Conventional switching | HEVO Dual technology with stepped pistons |
| Service life | Standard | Up to 4x longer lifetime |
| Architecture | Direct drive | Direct drive, gearbox-free |
Why Choose MHD Motors
Designed for Demanding Performance
The MHD range was developed to help OEMs overcome common challenges associated with high-performance hydraulic systems.
Key Benefits:
✅ High power density
✅ High-speed performance in both direction
✅ Up to 96% efficiency
✅ Possibility to reduced fuel consumption
✅ Simplified machine architecture
✅ Extended motor life
✅ Fewer parts to source, inventory, and maintain
For High Speed, High Power and Productive Applications
Application | Main Challenge | MHD Benefit |
| Drill Heads | High torque at high speed | Increase productivity |
| Harvester Heads | Continuous operation | Improve efficiency, productivity, and operating cost |
| Mulcher Heads | Reliability in severe duty cycles | Extended lifetime |
| High-Power Attachment Drives: Mulchers, Grinders, Crushers, Chippers, Trenchers, Milling Drums, Augers, Shredders... | High-power demand, efficiency losses and durability at high speed | Continuous full-power performance, higher efficiency and extended lifetime |
| Forestry Winches | Continuous operation under heavy load | Improved durability and reduced operating costs |
Industry Challenge & Benefit
Industry Challenge | MHD Solution | OEM Benefit |
| Complexe drive-line architecture | Direct-drive design | Fewer components |
| Power loss at high speed | HEVO Dual Technology | Sustained productivity |
| High energy consumption | Up to 96% efficiency | Reduced operating costs |
| Componant wear | Optimized bearing and piston load distribution | Longer service life |
| Gearbox-free | Single-unit architecture | Simplified integration |
How HEVO Dual Technology Works
HEVO Dual Technology uses an innovative two-displacement architecture that prioritizes operation in small displacement mode whenever possible.
This approach combines:
✅ High pressure
✅ Lower hydraulic flow
✅ Improved efficiency
✅ Sustained power at high speed
A unique hydraulic distribution system allows the motor to maintain high output power during continuous duty cycles while distributing loads evenly across internal components.
This balanced load distribution helps reduce mechanical stress and contributes to longer service life.
Key Benefits
Higher Productivity with Improved Efficiency | Extended Motor Life |
| ✅ High power output across the operating range ✅ Full-performance operation at high speed ✅ Up to 96% efficiency ✅ Reduced fuel consumption | ✅ Balanced load distribution ✅ Reduced mechanical stress ✅ Lower wear during high-speed operation ✅ Enhanced durability for demanding duty cycles |
How MHD Addresses Key OEM Challenges
Reduce System Complexity | Deliver More Power in Less Space | Maintain Full Power at High Speed | Lower Operating Cost |
The MHD direct-drive solution replaces traditional motor-and-gearbox arrangements with a single integrated unit. Benefits include: ✅ Fewer components | MHD motors provide: ✅ Up to 150 kW output power | Unlike traditional architectures, The result: ✅ Higher productivity without compromising reliability | High efficiency contributes to: ✅ Lower fuel consumption across operating conditions In addition, fewer mechanical components help: ✅ Reduce maintenance requirements and downtime |
Proven Performance in Real Applications
FORESTRY HARVESTER HEAD WITH HEVO TECHNOLOGIES | HORIZONTAL DRILL HEAD WITH HEVO TECHNOLOGIES |
| 
|
| Result | Result |
✅ +25% cutting head productivity ✅ -20% CO2 emissions | ✅ +15% output torque from the drill head ✅ -10% internal engine consumption |
What Makes MHD Motor Different: Bearing Support, Hydrobase, Shifting System, Rotating Group
💡NEW BEARING SUPPORT
The MHD bearing support is designed to handle the entire external load and transfer forces directly into the machine structure.
💡NEW HYDROBASE
MHD innovative distribution and hydrotorque module are fully dedicated to handle the highest performance level:
✅ MHD09, 150 kW for 978 cm3/rev
✅ MHD06, 100 kW for 630 cm3/rev
💡NEW HIGH DURABILITY SHIFTING SYSTEM
✅ Validated for high frequency operation
✅ Qualified for 10 million cycles
💡NEW ROTATING GROUP FEATURING HEVO DUAL TECHNOLOGY
Unlike conventional radial piston designs, MHD motors use innovative stepped-piston technology with two actively managed piston surfaces.
Benefits include:
✅ More available power in reduced displacement mode
✅ Reduced parasitic losses
✅ Lower mechanical stress
✅ Increased service life
✅ Improve efficiency
MHD Specifications
Specification | MHD06 | MHD09 |
|---|---|---|
| Max. Pressure | 450 bar 6,526 PSI | 450 bar 6,526 PSI |
| Displacement | 388 to 630 cm3/rev. 23.6 to 38.4 cu.in/rev. | 602 to 978 cm3/rev. 36.7 to 59.7 cu.in/rev. |
| Max. Power | 100 kW 134 HP | 150 kW 201 HP |
| Max. Torque | 6500 N.m | 7000 N.m |
| Max. Speed | 400 RPM | 420 RPM |
| Max. Length | 310 mm 12.2 in | 328 mm 12.9 in |
| Max. Diameter | 237 mm 9.3 in | 262 mm 10.3 in |
| Wheel Flange | ✅ | ✅ |
| Hollow Shaft | ✅ | ✅ |
| Service Brake | - | ✅ |
Need More Power in Less Space? Talk to an Expert
Frequently Asked Questions about HEVO Dual Technology & MHD Hydraulic Motors
-
Can MHD hydraulic motor deliver both high speed and high torque?
Yes. MHD motors are designed to combine high rotational speed with sufficient torque capacity to handle demanding loads.
Large displacement remains available for torque peaks, while reduced displacement enables high-speed operation.
-
Our attachment operates most of the time at high speed. Why should we consider MHD motor?
Conventional motors tend to lose efficiency when operating at high speed.
MHD technology allows the hydraulic motor to stay longer in its most efficient operating mode, helping maximize productivity and reduce energy consumption.
-
Can MHD motor help increase the productivity of my drilling machine?
Yes. MHD's field results have demonstrated increased drill head output torque and improved machine productivity by maintaining power availability across a wider speed range.
-
Is MHD hydraulic motor suitable for road milling drums and trenchers?
Yes. Applications such as milling drums and trenchers require a combination of high torque, high rotational speed and continuous power delivery.
MHD is specifically designed for these demanding operating conditions.
-
Can MHD motor reduce maintenance requirements?
Yes. By eliminating the gearbox in many direct-drive architectures and reducing the number of mechanical components, MHD motor can significantly reduce maintenance requirements and machine complexity.
-
Why is MHD motor range particularly attractive for forestry attachments?
Forestry tools such as mulchers, grinders and chippers require continuous operation under heavy loads. The MHD architecture improves load distribution, efficiency and durability, making it well suited for severe-duty forestry applications.
-
What benefits can MHD bring to harvesting equipment?
MHD motor helps maintain full power availability during demanding harvesting cycles while improving overall transmission efficiency and reducing fuel consumption.
-
Can MHD motor withstand high external loads?
Yes. The MHD bearing support has been specifically designed to handle external loads, while the new architecture minimizes parasitic forces generated by multispeed operation.
-
How does MHD motor improve lifetime compared with conventional multispeed motors?
The HEVO Dual Technology keeps all MHD pistons and cam lobes active in reduced displacement, resulting in improved load sharing and reduced mechanical stress.
This contributes to significantly longer service life (x4 times).
-
Is MHD only for new machine designs?
No. MHD motor can be considered both for new machine developments and for machine redesign projects where OEMs want to increase productivity, simplify architecture or replace a gearbox-based solution.
-
What is the main benefit for OEM machine designers?
MHD motor helps designers increase machine performance while reducing architectural complexity.
A single direct-drive solution can replace a traditional motor-and-gearbox arrangement or direct drive arrangement in many applications.
-
What types of high-power tools are ideal candidates for MHD motor?
MHD motor is particularly suitable for:
Drill heads Wood chippers Road milling drums Shredders Harvester headers Stump grinders Trenchers ... Mulchers Rock grinders Augers ... These applications all combine high power demand, high speed operation and strong durability requirements.
