With 352 hp (263 kW) net, the 33,750-kg (74,400-lb) WA500-7 that Komatsu debuted at Intermat is powered by the company's SAA6D140E-6 engine and is U.S. EPA Tier 4 Interim and EU Stage 3B emissions certified.
Built upon proven Stage IIIA technology, the SAA6D140E-6 engine provides lower emissions while also lowering fuel consumption by about 7%. The Tier 4 Interim engine uses an advanced electronic control system to manage air flow rate, fuel injection, combustion parameters, and aftertreatment functions to optimize performance, reduce emissions, and provide advanced diagnostic capability.
Komatsu has also developed a hydraulically actuated variable geometry turbocharger and an EGR valve, resulting in better precision and air management as well as longer component life. Komatsu says its DPF has an integrated design that will not interfere with daily operation but will keep the operator aware of its status.
The WA500-7 is equipped with the latest KOMTRAX technology, which sends machine operating information to a secure website utilizing wireless technology. Data such as operating hours, fuel consumption, 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.
Also included on the new wheel loader is Komatsu SmartLoader Logic, which helps to save fuel by automatically decreasing engine torque when the loader isn’t working hard, such as when it is driving with an empty bucket. SmartLoader Logic functions automatically and doesn’t interfere with operation, saving fuel without decreasing production.
The WA500-7 has a newly designed large-capacity torque converter that provides improved acceleration, improved hill climb ability, a higher top speed, and lower fuel consumption. A standard lock-up function feature activates in second, third, and fourth gears and gives the machine a maximum ground speed of 40 km/h (25 mph).
The wheel loader has greater productivity in V-cycle applications because of the increased tractive effort. The improved hill climbing ability allows the WA500-7 to up-shift gears faster because of improved acceleration. The wheel loader can also achieve higher gear ranges and maintain higher ground speeds when working in load-and-carry applications. In most applications, production is increased and fuel consumption reduced, resulting in improved fuel efficiency.
The cab's front glass has been lowered and the dashboard redesigned to improve visibility. The short lever Electronic Pilot Control is connected directly to the operator seat. A precise and comfortable temperature can be set with the Climate Control system, and a CD-Radio including two 12-V ports was incorporated into the cab.
A new high-resolution 7-in LCD monitor features enhanced capabilities and displays information in 25 languages for global support. Using the monitor, the operator can easily modify settings for items such as the Auto Idle Shutdown or the auto-reversing fan.
Operators can also check operational records, such as working hours or fuel consumption; monitor the DPF; or check how much time is required before the next maintenance interval. The monitor also offers the operator the option of using the ECO Guidance function, which will provide operational tips to reduce fuel consumption. A separate high-resolution back-up camera is standard with every machine and is mounted on the right-hand side of the console for operator convenience.
This machine is well suited for the toughest quarry and mining applications and for material handling. Its 3300 mm (130 in) dumping height allows it to easily load high boarded trucks even with a 5.6 m³ bucket, saving time at the job site. With a 40° steering articulation angle to both sides, the WA500-7 is very maneuverable in tight places for faster loading cycles, especially on small quarry benches.
The WA500-7 provides easy service access to reduce costly downtime. The new model has increased cooling capacity, wider cooling fin spacing, and a standard auto-reversing fan to help keep the radiator clean. The machine is equipped with the exclusive Komatsu EMMS (Equipment Management Monitoring System), which has enhanced diagnostic features that give the operators and technicians greater monitoring and troubleshooting capabilities. EMMS also continuously monitors all critical systems, preventative maintenance, and provides troubleshooting assistance to minimize diagnosis and repair time.