KOBELCO Construction Machinery U.S.A. has expanded its demolition equipment range with two straight-boom excavators, the SK300LC-11 and SK350LC-11. The company says both machines are purpose-built for demolition and are intended to provide greater working height than conventional mono-boom excavators while combining reach and tool capacity with stability and control.
Power and hydraulic setup
Both models use a 265-hp Isuzu Tier 4 Final engine with SCR/DEF emissions technology and no diesel particulate filter. KOBELCO says the engine supplies the power and torque required for heavy demolition attachments. A case-drain circuit is standard, broadening compatibility with tools that need greater hydraulic drainage. An in-cab hydraulic pressure-release function lets the operator relieve pressure before disconnecting work tools or hoses.
Reach and tool capacity
Straight-boom configuration raises working height versus conventional booms and supports substantial demolition tool capacities. Contractors can choose standard or long arms to balance reach and capacity. The specifications are:
- SK300LC-11, standard 10 ft 2 in arm: 36 ft maximum reach and 8,708 lb maximum tool capacity.
- SK300LC-11, long 13 ft 1 in arm: 39 ft maximum reach and 7,959 lb maximum tool capacity.
- SK350LC-11, standard 10 ft 10 in arm: 37 ft maximum reach and 10,825 lb maximum tool capacity.
- SK350LC-11, long 13 ft 7 in arm: 39 ft maximum reach and 9,348 lb maximum tool capacity.
Operator cab and controls
The cab has a seven-way adjustable heated air-suspension seat that moves with the armrests and hydraulic controls, intended to reduce fatigue and absorb shock. Redesigned pilot levers have shorter strokes and horizontal movement for precise control. A 10-inch colour monitor and jog dial provide access to machine settings, attachment flow adjustments, maintenance information and fuel consumption data. The monitor also shows a 270-degree view from the standard three-camera system. Hydraulic flow for breakers, nibblers and rotating grapples can be adjusted through the monitor, and settings for additional attachments can be added or changed. Other cab features include automatic climate control, Bluetooth hands-free audio, USB charging and LED-backlit controls.
Protection, visibility, telematics
The cab includes a Roll-Over Protective Structure and heavy-duty Level II top and front guarding for demanding demolition environments. Rear swing flashers and rear-facing work lights are integrated into the counterweight. Seven LED work lights are standard: two on the boom, two at the front of the cab, one on the right side and two rear-facing units in the counterweight. KOBELCO KOMEXS telematics gives owners and fleet managers remote access to operating hours, fuel consumption, maintenance status and machine location. It also provides an engine start alarm, geofencing and current and historical location data.
Warranty and positioning
The SK300 and SK350 straight-boom models are covered by KOBELCO's standard machine warranty, with KOMEXS included while the machine is under the factory warranty. Extended warranty coverage is available. Dan Collins, director of product development for KOBELCO Construction Machinery U.S.A., said the demolition industry continues to evolve and that KOBELCO is committed to purpose-built machines addressing contractors' changing needs. He said the lineup expansion reflects that commitment and offers increased reach and tool capacity along with quality, comfort and controllability.