Komatsu America Corp. introduced the WA270-7 wheel loader. With a net horsepower of 149 hp (111 kW), the WA270-7 is powered by a Komatsu SAA6D107E-2 engine, which is EPA Tier 4 Interim and EU Stage 3B emission certified. Built upon a proven Tier 3 engine platform, Komatsu has leveraged its leadership in technology and innovation to design a more environmentally friendly engine with fuel consumption decreased by up to 10 percent, compared to the WA250-6.
The WA270-7 replaces the WA250-6 and WA250PZ-6. Weighing in at 28,836 lb. (13,080 kg), the new wheel loader features improved efficiency, lower fuel consumption, improved operator comfort and enhanced serviceability to maximize productivity while lowering operating costs.
The WA270-7 utilizes the versatile Parallel Z-bar (PZ) loader linkage. This linkage combines the advantages of a parallel lift linkage for pallet handling and high tilt forces for large attachments. The PZ linkage also offers large breakout force and a 10 percent increase in lift force, which not only makes bucket filling quicker and easier but also improves digging performance.
New features of the WA270-7 include:
EPA Tier 4 Interim and EU Stage 3B Emission Certified Engine – Built upon proven Tier 3 technology, the SAA6D107E-2 engine provides lower emissions while also lowering fuel consumption. The Komatsu Tier 4 Interim engine uses an advanced electronic control system to better manage air-flow rate, fuel injection, combustion and exhaust after-treatment to optimize performance, reduce emissions, reduce fuel consumption and provide advanced diagnostic capability.
Komatsu has leveraged its leadership in hydraulic technology to develop a hydraulically actuated Komatsu Variable Geometry Turbocharger (KVGT) and an Exhaust Gas Recirculation (EGR) valve. This results in better precision and air management as well as longer component life. The Komatsu Diesel Particulate Filter (KDPF) has an integrated design that will not interfere with daily operation yet keeps the operator aware of its status. This smart system enables a high percentage of passive regeneration.
The WA270-7 also features Komatsu SmartLoader Logic, which provides optimal engine torque for the job required. Komatsu SmartLoader Logic helps save fuel by automatically decreasing engine torque when the loader isn’t working as hard, such as when it is driving with an empty bucket. Komatsu SmartLoader Logic functions automatically and doesn’t interfere with operation, saving fuel without decreasing production.
Responsive Hydrostatic Powertrain System – Now in its third generation, the Komatsu hydrostatic (HST) drive train features increased pump capacity for higher efficiency and responsiveness. The dynamic-braking effect of the HST drivetrain slows down the machine when the accelerator is released. Additionally, brake wear is practically eliminated. Control is also enhanced, which is especially important when working in tight places.
The electronically controlled HST drivetrain features Komatsu Traction Control System, which helps facilitate operation in soft or slippery ground. Simplified traction controls feature AUTO and S-Mode. Variable Speed Control (VSC) allows the operator to set a maximum speed up to 8.1 mph for applications such as mowing or broom use. For slower speeds, the creeping speed range sets a maximum speed up to 2.5 mph.
Enhanced Operator Environment
The new cab provides a more comfortable and quieter work environment. For improved visibility, the front glass has been lowered and the dashboard has been redesigned. A new redesigned seat-mounted right hand console has a multi-function mono-lever with proportional control for the integrated third spool. An auxiliary input has also been added to connect an MP3 player or other device along with two 12-volt ports that have been incorporated into the cab.