KOBELCO's new 93-ton excavator saves fuel while maximizing power

KOBELCO Construction Machinery USA Inc. has expanded its line-up of construction machinery with the launch of its large Next-Generation -11 Series crawler excavator. Weighing in at 190,000 lbs, the 93-ton crawler excavator offers power and stability even when working in large-capacity applications. A new 512-hp Isuzu TIER IV Final engine is capable of lifting heavy loads and operating large tools with ease. The boom-to-arm hydraulic reintegration system, ECO-Mode, auto idle stop, and auto engine deceleration provide fuel savings while delivering ample power.

The hydraulic system on the SK850LC-11 provides power and versatility 

The KOBELCO pilot-controlled hydraulic system delivers a smooth response to operator input with a digging force of 90,600 lbf and an arm force of 61,148 lbf. Featuring auto warm-up, combination rotation with 2-way nibbler breaker with case drain, ISO/BHL pattern changer, and boom and arm safety valves. The ability to perform multiple tasks while travelling (lift, swing, and carry) is provided with the exclusive "Independent Travel" function. With the press of a switch, the machine dedicates one hydraulic pump to the travel system and one to all the other functions, allowing the -11 series to travel smoothly while lifting and swinging heavy loads. Heavy Lift and Power Boost (with unlimited time use) selection adds the power needed to get through tough conditions, and the in-cab hydraulic pressure release function allows customers to change work tools or hoses easily and safely.

Improved total machine durability 

The heavy-duty exterior includes a retractable undercarriage, three track guides, belly guards, a swivel guard, and folding catwalks. For added safety, the machine has 6 front and 4 rear LED work lights, exclusive rear swing flashers, a battery disconnect switch, and a heavy-duty Level II FOPS cab guard that opens for easy cleaning. Additionally, the reversible fan and removable clean-out screens keep the machine running cool.  

Safety is enhanced for operators through innovative technologies

The cabin throughout the -11 series has been designed with enhanced ergonomics and safety features. A 7-way adjustable, heated air suspension seat moves together with the armrests and hydraulic controls to reduce operator fatigue, improve shock absorption, and enhance comfort when working.

The operator's pilot levers move horizontally without arching the wrist while also providing shorter lever strokes for swift, precise movement. Multiple air-conditioning and heater vents are directed toward the operator to maximize comfort. On the right side of the console, a jog dial integrates multiple functions into a single user interface on a large 10-inch colour monitor. The easy-to-operate menu screen facilitates reading information such as work mode, maintenance intervals, and fuel consumption. As well, the screen provides a 270-degree view from the machine's standard three-camera system. 

The hydraulic flow-rate modes of the breaker, nibbler, and rotating grapple are also now fully adjustable by the operator through the monitor, and the mode settings for other attachments, such as a hammer, can also be added or changed to customize the operator's experience. 

In addition, all internal switches and dials in the cabin have LED backlighting to provide a bright, clear view in the dark. The cabin is equipped with an FM/AM, AUX, Bluetooth, hands-free telephone radio, smartphone holder, USB charger, and a 12V power outlet.  Adding to the standard features is the KOMEXS telematic system, K-LOAD weighing system, and a 4-year, or 4,000-hour limited full machine warranty.  Optional items include a front cab guard and a removable counterweight.