Pit & Quarry, August 2013
EXCAVATING DREDGING ROUNDUP Uses less fuel than predecessor The CX800B excavator from Case Construction Equipment sports a Tier 3 certified Isuzu engine that delivers 532 net hp The CX800B uses less fuel than its previous model and the regenerative hydraulics on the boom and arm as well as the bucket curl speed up cycle times Cases Auto Power Boost feature increases digging force by 10 percent over the previous model the company says Also three work modes automatic heavy and speed priority are designed to simplify operation An isolation mounted cab has a quiet operating environment Attachments are easily viewed overhead and in the trench Flip open service panels provide easy access and the engines oil filter can be changed without having to go underneath the machine www casece com Power performance improved on unit Two in one dredge The Barracuda Class dredge from DSC Dredge features a swinging ladder design and is easily transportable making it ideal for navigational recreational or restorative projects Offering the option of two front swing winches the Barracuda Class is a two in one dredge that converts from a swing ladder dredge to a conventional dredge without sacrificing portability Available in either diesel or electric power Barracuda Class discharge sizes range from 10 to 18 in Standard features include a control panel with a programmable logic controller based operating system and a power up down spud system with winch drums for proper cable storage A rear kicking spud for dredge positioning and advancement also comes standard Optional spud traveling carriages or two stern kicker spuds are available www dscdredge com The DX420LC 3 excavator has been upgraded with improved engine horsepower lift capacity and cooling capabilities according to Doosan With an operating weight of 92374 lbs a maximum digging depth of 25 ft 5 in a dump height of 25 ft 4 in and maximum digging reach of 37 ft the DX420LC 3 is capable of handling a variety of applications A six cylinder 362 hp water cooled diesel engine powers the excavator Doosan says the engine has been optimized for use with a cooled exhaust gas recirculation system a diesel oxidation catalyst and a diesel particulate filter The turbocharged engine features a high pressure commonrail design with direct fuel injection electronic control and four valves per cylinder www doosanequipment com 26 PIT QUARRY August 2013 www pitandquarry com
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