Link-Belt Cranes has integrated an auxiliary power unit (APU) into its newest rough terrain crane, the 80-t (85-USt) 85|RT. The use of this lithium-powered APU will improve efficiency and the lifespan of the crane, while reducing fuel consumption and minimising emissions.

“In our ongoing effort to produce products that are more sustainable, our engineering team has leveraged some of the latest, cutting-edge technology to develop an APU unit that is lean, clean and green,” said Kelly Fiechter, product manager for rough terrain cranes at Link-Belt.

For Link-Belt, this patent pending APU design will be a new option that allows a crane to keep the operator cab comfortable by maintaining the integrated HVAC system while the engine is off. The APU will run from a self-charging lithium-ion battery power source.

Once the engine is started, the APU will go into charge mode and the crane’s engine takes over as the power supply. The APU when used in combination with the 85|RT’s auto idle/shutdown feature provides the operator with uninterrupted comfort regardless of engine status.

According to Link-Belt, a study of shared telematics data concluded that almost 70% of rough terrain crane engine hours are logged at engine idle. This APU system can help reduce idle time, reduce engine hours on the crane, reduce engine emissions, and potentially reduce required regular service. The APU is also very quiet, compared to main engine run sound levels.  

Testing for the APU is well underway on the 85|RT and Link-Belt expects to complete it in the second half of 2023.