Wed February 09, 2011 - National Edition Construction Equipment Guide

Komatsu America’s PC450LC-8 hydraulic excavator has a standard heavy-duty boom, and offers reduced noise levels inside the cab. Komatsu’s latest series delivers maximum digging force with fuel economy in tough digging conditions, according to the manufacturer.

The PC450LC-8, with a flywheel horsepower of 345 hp (257 kW), has an operating weight of 100,860 lbs. (45,749 kg), and is powered by a Komatsu SAA6D125E-5 engine. The electronically controlled HPCR (high pressure common rail) fuel injection system provides low noise operation, and remains fuel efficient while delivering power and productivity.

The PC450LC-8 is equipped with KOMTRAX technology, which sends machine operating information to a secure Web site utilizing wireless technology. Data such as operating hours, location, cautions and maintenance alerts are relayed to the web application for analysis.

The KOMTRAX fleet monitoring system increases machine availability, reduces the risk of machine theft, allows for remote diagnosis by the distributor, and provides a wealth of other information to drive business efficiency and productivity, according to the manufacturer.

Special features of the PC450LC-8 include:

The 7 in. LCD monitor enables accurate smooth work and displays data in 10 languages for global support. There are five modes of operation that may be selected through the monitor panel: power mode, economy mode, lifting mode, breaker mode and attachment mode. The monitor panel also displays the automatic air conditioner, machine maintenance tracking and the image from the standard, counterweight-mounted rearview camera system.

• Built for Durability and Reliability

All major components on the PC450LC-8 including the engine, hydraulic pumps, motors, and control valves are exclusively designed and produced by Komatsu. A heavy duty boom design is now standard equipment. The boom and arms also exhibit long-term durability and are resistant to bending and torsional stress due to large cross-sectional structures, thick high tensile strength steel, interior partition walls, and large one piece castings. Komatsu frames are designed using the most advanced three-dimensional CAD and FEM analysis technology.

Electronic components such as controllers, connectors, sensors and wiring have undergone extensive testing to ensure reliability in the harshest conditions. The electronic connectors are DT-type and seal against dirt and moisture. All hydraulic cylinders are protected by metal guard rings for additional reliability. Hydraulic hoses are equipped with O-ring seals versus conventional taper seals to provide extended leak-free life. The standard high pressure in-line filters at the pump outlet port provide an extra level of protection to the hydraulic system. Long replacement intervals for hydraulic oil, engine oil and filters keep the machine up and running for increased hours on the job.

• Versatility to Match Different Job Applications

The PC450LC-8 comes equipped with two boom mode settings, five working modes and Power Max control. These modes are designed to match engine speed, pump flow and system pressure to specific application requirements, providing the operator with the flexibility to match equipment performance to the job at hand.

With many excavators operating a wide variety of working attachments, the PC450LC-8 is equipped with breaker mode (single action circuit) and attachment mode (double action circuit) that allow the operator to adjust hydraulic flow directly from the cab through the large monitor panel. The attachment flow control has been improved and is more flexible for effortless attachment adjustments. In hard digging applications, a one-touch Power Max Function increases digging force by 7 percent for 8 seconds, creating a noticeable difference in digging performance, according to the manufacturer.

• Cab Enhancements Provide Comfortable Working Environment

A wide spacious cab with a high back operator seat provides support and comfort for reduced fatigue and higher productivity. The multi-position, PPC (pressure proportional control) levers and armrest integrated with the console levers allow the operator to work in comfort while maintaining precise control.

The highly pressurized cab keeps dust from entering the operator’s compartment, while its rigid frame offers wide visibility and has sound absorption. The multi-layer viscous cab mounting system incorporates longer stroke and the addition of a spring. Combined with a high rigidity deck, the new cab damper mounting reduces noise and vibration levels at the operator seat. A high capacity automatic heater/defroster/air conditioning system is incorporated into the new monitor panel and is provided as standard equipment.

For more information, visit www.komatsuamerica.com.

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