Tracks Concrete’s latest buy of a brand new 14-tonne doosan dx 140 was a part of an replace of its nine-strong fleet of excavators.
The workforce preferred its close to zero radius tail swing, which makes it excellent for Tracks’ work in typically confined areas. The dozer blade impressed the operators with the additional capability it delivers. As well as, contemplating the worth for cash the 15.2-tonne machine provides in its class, Tracks director Ken Younger says it got here with a really engaging price ticket.
Tracks’ fodder consists of demolition; earthworks; web site preparation and levelling; drainage; concrete works and paving; precast panel provide and erection; the constructing of retaining partitions and different various timber works; highway development; and enormous civil development works for personal builders and native councils.
Latest restore work within the space required an agile, steady machine that would manoeuvre simply in tight areas on tough terrain, but ship the required energy to dig, pull, and haul sizable hundreds.
Younger says the Doosan dealt with these jobs properly, “however it will also be used for normal work comparable to web site improvement, which makes it total a great purchase”.
“Doosan has created an unbeatable hydraulic excavator with a cost-performance ratio that makes the DX 140LCR a frontrunner in its class. The machine’s final aggressive benefit for work in confined areas in each constructed up and rural areas is the aptitude it delivers for its measurement,” Doosan normal supervisor Theo Valk says.
Valk says the compact DX 140LCR, with an working weight of 15,200kg when fitted with normal increase, arm and zero.51m3 bucket, has a tail swing radius of simply 1480mm – a discount of about 33 p.c on the earlier mannequin.
The operator has loads of room and nice visibility – even a sunroof – and all of the important controls at his fingertips.
The “greatest at school” four-cylinder Cummins QSB4.5 Tier three compliant diesel engine delivers most energy of 73.5kW at 1850rpm on the flywheel, and a hefty serving to of torque, making for grunty digging pressure, environment friendly for loading and drawbar pull, Valk says.
The hydraulic system has two variable displacement cross-sensing axial piston pumps, every with a most stream of 114L/min. This implies the digital energy optimising system can generate main energy from little pressure. It connects to the engine’s digital management with an information switch hyperlink, which additional harmonises the engine- hydraulics operation.
A serious normal security characteristic is the hydraulic security lock set-up, designed to cease bucket and increase falling on somebody’s head.
The Doosan DX 140LCR has two working modes and two energy modes, which allow gasoline financial savings. The machine has a built-in person pleasant auto idle characteristic that, Valt says, reduces noise and additional saves gasoline.
Valk says “the workgroup can be a lot stronger”. The form of the increase has been optimised, permitting uniform load distribution all through the construction. The arm meeting now makes use of solid components and has further reinforcements across the bosses.
The bucket breakout pressure (11,177kgf) and arm breakout pressure (6401kgf) stay the identical because the earlier mannequin. The lifting capability over the entrance at a 3m radius is 738kg, and the drawbar pull-tractive effort is 15,546kgf. Most digging attain at floor degree is 8155mm and most dump top is 6840mm.
These capabilities carry reliable stability, particularly on treacherous floor. Valk says the machine’s excellent efficiency on this respect, even when fitted with lengthy front-end gear, is the results of three components. Firstly, the grunty three.5-tonne curved counterweight that extends across the rear of the cab retains it firmly anchored to Mom Earth with out including inches to its girth.
Secondly, a newly designed and strengthened chassis body part gives a powerful undercarriage anchor between the workgroup and home and the tracks. Lastly, the three.755mm observe size and 600mm observe shoe width give it good grip and broader, extra even weight distribution.
Engine service intervals have been pushed out to 500-hour intervals. This is because of Doosan’s use of recent polymer shims, and the brand new design of the bushings used on the increase, arm, and bucket places. As well as, easy accessibility panels simplify servicing and upkeep of engine elements and spares.
Operator Tony Lumsden, who has been placing in lengthy hours on the Doosan, has solely constructive suggestions concerning the machine.
He’s notably happy with the cabin’s consolation and house, the sound absorption options, and 360 levels visibility, the results of a pillar-free window, rear mounted digicam that shows on a color monitor, and proper and left rear view mirrors. The blade can be a winner: “It took me about two days to get used to the brand new machine, however it’s so properly designed and comfy, ultimately I did not wish to get out till lunchtime or knock off time!
“All of the knobs and levers are inside vary of my fingers, and the controls are very exact. The visibility is one of the best I’ve come throughout. The underside window on the right-hand aspect is efficacious to see the place I have been and what I am doing with the blade. The digicam took some getting used to, too, however I am utilizing it on a regular basis now to estimate my place and reverse in tight spots.
“That is the primary time I’ve had an excavator with a blade, and it is nice for levelling, clear up work, stabilising the machine, and for making a fast observe to get entry to a different working degree. It is an actual time saver.