The PMx28 is Junttan’s biggest pile driving rig with a telescopic leader for extremely efficient and more powerful heavy-duty use. The rig has excellent stability and wide leader inclination angles. The recommended hammer size is from 5 000 to 9 000 kg, and the maximum pile length is 28 metres (91 ft) with the Junttan SHK5 hammer.
The whole basic structure and component layout of the PMx28 has been redeveloped based on Junttan’s 35 years of experience in the field, which means effortless operation and maintenance, and uncompromising safety, stability, transportability, and structural strength.
The hydraulic system has also been completely overhauled, and Junttan’s innovative X control system for the PMx28 has been further developed for the most convenient and productive operation and low fuel consumption. The PMx28 utilises the latest engine technology to conform to the toughest international emission legislation.
Improving operator efficiency and safety as well as minimising energy losses within the system have been the key design goals for the PMx28. Deep system integration results in reduced emissions, improved performance, and improved fuel economy without compromising the rig’s performance, allowing for seamless operation.
There are several developments that dramatically minimise fuel consumption and the operator’s role in it. A thermostatically controlled engine and hydraulic oil coolers with an optimised air circulation system, together with a streamlined main hydraulic oil circuit and extended hose diameters, decrease fuel consumption by up to 2 litres per hour compared to previous models. The new post-compensated and load-sensing hydraulic system saves another litre per hour compared to traditional hydraulic systems, and the unique PileCruise feature eliminates human factors from the total system efficiency, decreasing the power consumption of the hammer by up to 20%, depending on the operator. Tier 4 certified Cummins engines are also available to further decrease emissions.