Capital Equipment News March 2017

COVER STORY

The DX225LCA excavator is ideal for diverse industries, including construction, mining and quarrying, marine, civil engineering and forestry.

mechanically bolted pins are composed of sealed, self-lubricating links, which are isolated from external contamination for dependability in all conditions. The hydraulic track adjuster has a shock absorbing tension mechanism. The DX225LCA series has standard hydraulic piping for hammer applications and an improved H Class bucket. The machine is supported by Doosan’s 2 year/ 4 000 hour warranty. More features The swing mechanism – an axial piston motor with a two stage planetary reduction gear – offers increased swing torque at reduced swing times. The maximum swing speed is 11 rpm. The 21,5 t operating weight is enhanced by new specifications that include a 0,92 m³ bucket capacity, a digging depth of 5 755 mm, a digging reach of 8 950 mm and a digging height of 9 750 mm. The engine rated power is 110 kW (148 hp) at 1 900 rpm. Maximum engine torque is 61,5 kg.m/1 400 rpm. For optimum control, the e-POS system (Electronic Power Optimising System) pro- vides a perfect synchronised communica- tion link between the engine’s electronic control unit and the hydraulic system. A controller area network system facilitates a constant flow of information between the engine and hydraulic system, ensuring

power is delivered exactly as it is needed. Tests show that these machines have the industry’s best traction force for their machine weight, especially when working on a slope or on tough ground conditions. The hydraulic system enables indepen- dent or combined operations. Two travel speeds offer either increased torque or high speed tracking, while an auto decel- eration system and cross sensing pump ensure better fuel savings. The conveniently positioned multi-func- tion colour LCD monitor panel has stan- dard features for simple control and effi- cient operation. The controls include mode selection, precise flow rate regulation, auto deceler- ation and display selection. Maintenance and oil change intervals can be displayed, a self-diagnosis function allows technical problems to be quickly resolved and an operational memory provides a graphic display of the machine’s status. Levelling operations, movement of lifted loads and tricky manoeuvres are all con- trolled easily and precisely with control levers. Buttons integrated on the levers are used to operate additional equipment, such as grabs, crushers and grippers. Doosan’s DX225LCA excavator has been designed with the latest ergonomics which enhance efficient operation, improve safety and offer greater operator comfort for reduced fatigue. New

features include a spacious, all-weather sound-suppressed cab with a clear all round view, effective air conditioning and an adjustable seat, with an optional air suspension system to reduce vibrations. For improved safety, there are large handrails and a wide step with anti-slip plates, right and left rear view mirrors, a travel alarm and safety glass. The series has been designed for easy maintenance and reduced downtime. A PC monitoring function enables connection to the e-POS control system. Various param- eters can be checked during maintenance, including pump pressure, engine rotation and engine speed. This information can be stored and printed for analysis. Easy access to all components, includ- ing the engine oil filter, radiators and grease inlets, enables quick maintenance procedures and prevents contamination to the surrounding environment. The DX225LCA excavator is ideal for diverse industries, including construction, mining and quarrying, marine, civil engi- neering and forestry. To complement the gains of the Korean build, Doosan offers a national technical advisory, maintenance and support service throughout its branches in Johannesburg, Durban and Wolmaransstad, as well as dealers in East London, Port Elizabeth, Cape Town, Middelburg, Kimberley, Rustenburg and Bloemfontein. b

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