Asphalt Pavers: Why Direct Drive is the Key to Perfect Road Finishing
For asphalt paver manufacturers, the challenge is twofold: guaranteeing an asphalt laydown with zero visual defects, while optimizing machine fuel consumption and compactness. With over 30 years of experience in this field, Poclain Hydraulics is redefining standards with its reference offer in hydrostatic transmission.
The Challenge of Low-Speed Consistency
The asphalt paver’s worst enemy is irregularity. Traditional transmission systems can suffer from mechanical play ("backlash") or jerks during the frequent starts and stops typical of a job site. These micro-variations translate immediately into ripples or marks on the asphalt mat—flaws that are unacceptable to project owners.
The Poclain Solution: Precision and Smoothness
Poclain’s answer lies in its radial piston cam motor technology (MHP and MS series). Unlike transmissions requiring complex gearboxes, our "Direct Drive" solution eliminates mechanical play.
The result? A backlash-free transmission capable of maintaining perfectly constant ground speed, even at very low RPMs. This fluidity ensures an impeccable surface finish, free from stop-and-go marks.
Performance Meets Compactness
Beyond paving quality, our system offers a decisive advantage for the machine's architecture itself: compactness.
- Simplified Integration: The power density of our motors frees up valuable space on the chassis.
- Optimized Circuit: Thanks to the efficiency of our closed-loop circuits and high-performance pumps (PM), oil volume requirements are reduced, allowing for smaller hydraulic reservoirs.
- Energy Efficiency: Fewer mechanical losses mean a direct reduction in fuel consumption and emissions—key criteria for modern construction sites.
A Complete System Offer
Poclain Hydraulics delivers more than just motors. We provide a complete and coherent powertrain:
- Motors (MHP/MS): For main drive, assist drive, as well as auger and conveyor functions
- Pumps : PM10, PM20, PM30, PM50
- Valves & Safety: Flow divider valves for traction on difficult terrain, and freewheeling valves for disengagement during towing
- A wide range of displacements (7 to 50cc) for precise control
By choosing Poclain Hydraulics, OEMs are selecting a field-proven technology that translates hydraulic performance into tangible road quality.
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