Finland-based piling rig manufacturer Junttan has launched three new larger piling rigs to extend the capabilities of its PMx rig range.
The PMx26, PMx27 and PMx28, have maximum leader capacities of 20t, 23t and 25t and can install maximum pile lengths of 24m, 25m and 28m, respectively.
According to Junttan, the PMx28 is the biggest complete purpose-built piling rig with telescopic leader ever built.
The manufacturer says that improving effciency and safety as well as minimising energy losses within the system have been the key design goals for the new range.
The range features a thermostatically-controlled Tier 4 compliant Cummins engine and hydraulic oil coolers with an optimised air circulation system, whichtogether with a streamlined main hydraulic oil circuit with extended hose diameters, decrease fuel consumption by up to 2 litres an hour compared to previous models.
The new post-compensated and load sensing hydraulic system saves another litre per hour compared to traditional hydraulic systems. The rig also has an effciency system called Pile Cruise that Junttan says can eliminate human factors from overall effciency by decreasing the power consumption of the hammer by up to 20%.
According to Junttan, the new rigs were developed in response to demand from the industry and it has worked with customers to develop the specification of the range, which it says has helped to ensure low ownership and operating costs.