CAT Presents New 340D L Hydraulic Excavator (USA)

CAT Presents New 340D L Hydraulic Excavator

The new Cat® 340D L hydraulic excavator can deliver steady high production with exceptional durability, reliability and low operating costs. The new model features a Heavy-Duty High Wide (HDHW) undercarriage, which significantly increases digging and lifting performance and allows the 340D L, with its fuel-efficient Cat C9 engine, to outperform similar machines having larger engines.

The 340D L’s broad selection of front linkages, buckets and work tools ensures its versatility, its quiet, comfortable cab ensures operator productivity, and its reduced maintenance requirements ensure minimal downtime.

Compared with the 340D L’s companion model, the 336D L, the new model’s HDHW undercarriage is 330 mm (11.8 in.) wider, 270 mm (10.6 in.) higher and 1 360 kg (3,000 lb.) heavier. The HDHW undercarriage provides enhanced stability, greater lifting power—both over-end and over-side—as well as increased ground clearance in rocky terrain.

The HDHW undercarriage also features multiple reinforcements in the track roller frames and carbody to ensure an exceptionally durable design. In addition, the undercarriage uses grease-lubricated tracks that decrease internal bushing wear, reduce travel noise, extend service life and lower operating costs.

Powerful engine and hydraulics 

With a net-power rating of 209 kW/ 285 hp (ISO 14396), the six-cylinder Cat C9 engine  incorporates Cat ACERT™ technology to effectively control emissions and to deliver maximum fuel efficiency. Fuel savings also result from the hydraulically driven, electronically controlled cooling fan that conserves fuel by adjusting speed to match cooling demand.

The 340D L’s implement hydraulic system provides constant hydraulic flow through the  control valve for quick response and precise controllability, but decreases flow when no hydraulic functions are activated, thus saving fuel and reducing heat. The 340D L has ample hydraulic horsepower to handle a wide range of buckets and work tools, and tool-control options, which further expand 340D L versatility.

For added fuel efficiency, the 340D L has an Economy working mode and uses a regeneration valve in both the boom circuit and stick circuit. The new valves transfer oil directly between the ends of the hydraulic cylinders (in certain operating situations), thus saving fuel by eliminating unneeded pump flow.

Dredging Today Staff, February 1, 2012; Image: cat

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