Komatsu America launches PC138USLC-10 tight tail swing hydraulic excavator

Komatsu America Corp. introduced the PC138USLC-10 tight tail swing hydraulic excavator. With an operating weight range of 31,791 – 32,628 pounds, the PC138USLC-10’s short tail swing radius makes it an ideal machine for confined work areas such as one lane of traffic or urban environments. The EPA Interim Tier 4 and EU Stage 3B emissions certified machine is the newest addition to Komatsu’s Dash-10 excavator line up.

The PC138USLC-10 has a net horsepower of 93.5 hp, powered by a Komatsu SAA4D95LE-6 engine. Komatsu has designed a more environmentally-friendly engine that maintains the proven performance of the previous series while reducing daily costs and fuel consumption.

Special features of the PC138USLC-10 include:

•EPA IT4 and EU Stage 3B Emissions Certified Engine
Komatsu’s IT4 engine platform uses an advanced electronic control system to manage airflow rate, fuel injection, combustion parameters and after treatment functions to optimize performance, reduce emissions and provide advanced diagnostic capability.

The new Komatsu Diesel Catalyst (KDOC) has an integrated design allowing this system to remove soot using 100 percent “passive regeneration” without the need for a Diesel Particulate Filter (DPF). Unlike a DPF, the KDOC does not have a scheduled replacement interval and is designed for long life with no maintenance required.

A new variable flow turbocharger, direct flow air filter, high-pressure common rail fuel injection, 16-valve cylinder head and Exhaust Gas Recirculation (EGR) are also part of the design of the PC138USLC-10. The result is precise air flow management and more complete combustion, eliminating the need for a DPF.

•Performance
Like the previous Dash-8 series, the PC138USLC-10 uses a contoured cab design that is unique because it allows the cab to swing within the same radius as the counterweight. The equipment is also designed to minimize the front swing radius for better operation in confined areas. With the standard additional counterweight, the PC138USLC-10 provides the same level of lift capacity and stability as a conventional excavator, but with the versatility of a tight tail excavator. An optional dozer blade makes backfilling quick and easy, and optional rubber (Roadliner) or steel track shoes are available to match the machine specification to the application requirements.

•Efficient Hydraulic System
All of the new excavator’s major components including the engine, hydraulic pump, motors and valves are exclusively designed and manufactured by Komatsu. This integrated design employs a closed center load sensing hydraulic system that takes hydraulic efficiency to the next level, utilizing both variable speed matching and low speed matching technology. Variable speed matching allows the engine speed to adjust based on the hydraulic pump output for both light and heavy-duty applications, while low speed matching utilizes a larger pump capable of producing higher pump output at lower engine speeds.

•Operator Environment
The contoured ROPS certified cab with sliding door is specifically designed for the PC138ULSC-10. The cab is mounted on viscous damper mounts to reduce vibration. An auxiliary input has been added to connect an MP3 player or other device that uses a standard auxiliary plug, along with two 12-volt ports that have also been incorporated into the cab.

A high resolution 7-inch LCD color monitor features enhanced capabilities and displays information in 25 languages for global support. The operator can easily select from six working modes to match machine performance to the application. These working modes include Power Mode, Economy Mode, Heavy Lift Mode, Breaker Mode, Attachment Economy and Attachment Power. The new monitor panel also provides Eco Guidance (operational efficiency guidance), operational records, fuel consumption history and utilization information. The standard rearview monitoring system allows the operator to view directly behind the machine with the push of a button.