Dürr has launched the EcoRP4, a new-generation painting robot designed to reshape high-volume automotive paint shops with a leaner design, improved access, and lower lifecycle costs.

 

The compact system marks the latest evolution of the German engineering and industrial technology major's long-running Ecopaint robotic family, which has shipped nearly 20,000 units worldwide since 1998. 

 

The EcoRP4 succeeds the six-axis EcoRP E/L x33iC robot and is purpose-built for standardized, high-throughput painting lines. It can be integrated flexibly into paint shops, whether floor-mounted, installed on towers, or deployed on linear rails.

 

“This fourth generation of robots is designed through and through for economy. Fewer components, a simplified mechanical system, and an easy-to-maintain design reduce the lifecycle costs when compared with previous generations, without affecting the process technology,” says Andreas Bokermann, product manager at Dürr.

 

At the core of the EcoRP4 is a redesigned asymmetric arm architecture that significantly improves reach inside vehicle bodies. 

 

By offsetting the tool center point by more than 200 millimeters, the robot keeps its own structure further away from the car body, allowing the applicator to access tight interior zones such as door rebates, hinges, and transition areas with greater precision. Mirrored versions enable use on both sides of the production line.

 

A slimmer arm design further enhances efficiency. Arm 1 has been made more compact to reduce space requirements and increase clearance around the vehicle, while arm 2 continues to carry the applicator, color changer, and metering pumps close to the paint outlet. Shorter tubing improves switching speed and reduces paint and rinse losses during color changes.

 

Dürr has also reworked the internal layout of process technology, integrating most components into arm 1 for easier access and higher efficiency. A redesigned housing and side-access cover system streamline maintenance. 

 

“For the redesign, we placed great emphasis on making it easier to access the process technology. “With fewer covers and side access, the new design simplifies maintenance and significantly shortens service times,” explains Bokermann.

 

Mechanical simplicity has been extended to the drive system as well. Axis 2 and axis 3 now eliminate angular gearboxes in favor of direct motor-mounted pinion drives, reducing component count, wear, and maintenance demands.

 

The EcoRP4 is also compatible with the HTE process and can be combined with Dürr’s latest application technologies in multiple configurations. Market launch is planned for 2027.