Komatsu America launches new WA900-8 wheel loader

Posted by Daniel Gleeson on 9th August 2019

Komatsu America Corp has introduced the WA900-8 wheel loader, a 116,400 kg machine equipped with US EPA Tier 4 Final certified emission regulations-compliant engine that is purpose–built to load 70-150 ton (64-136 t) haul trucks.

Robert Hussey, Product Marketing Manager, Komatsu America Corp, said: “The WA900-8 is the perfect machine for loading haul trucks in limestone pits because the all new Komatsu bucket design, with modified profile, maximises bucket fill to increase productivity. The large pillarless cab offers great visibility, and the higher capacity air suspension seat, along with the Electronically Controlled Suspension System (ECSS), provides a smooth ride for better travel performance to keep operators comfortable throughout long shifts.”

In terms of productivity and efficiency, the WA900-8 has a variable traction control system and modulation clutch system to provide optimal tractive effort for various ground conditions, the company says. Komatsu SmartLoader Logic, meanwhile, helps reduce fuel consumption while maintaining production levels. The wheel loader comes equipped with a closed centre load sensing hydraulic system to deliver hydraulic flow based on application demand, saving fuel and reducing hydraulic oil temperatures, Komatsu says. A throttle lock with auto-deceleration also improves cycle times by maintaining high work-equipment performance.

Under the hood of the WA900-8 is a US EPA Tier 4 Final emission regulation-compliant engine, the SSA12V140E-7, which outputs a net horsepower of 899 hp, or 670 kW (up 5% from the 856 hp on the WA900-3E0). It also boasts dual Komatsu diesel particulate filters/no selective catalytic reduction system and there is no need for diesel exhaust fluid. Variable geometry turbochargers ensure precise engine control and quick response, the company said.

In terms of accessibility and operator comfort, Komatsu listed these traits:

  • Advanced joystick steering system and electronic pilot control work equipment control levers provide quick and precise response to operator input;
  • Automatic dig system, semi-automatic approach and dump system help less experienced operators become more productive and can reduce fatigue for experienced operators;
  • High resolution, 7 in monitor with dedicated rearview camera, and;
  • 45° stairways on the left- and right-hand side of the machine and walkways in front of the cab and on the rear counterweight provide easy access on the machine.

The machine benefits from a number of new technologies, including an advanced machine monitoring system, with onboard diagnostics viewable with the 7 in LCD monitor, which means no laptop is required for machine troubleshooting; KomVision® with radar obstacle detection and a six-camera system on a dedicated LCD monitor to provide a bird’s-eye view around the machine and an audible alert when an obstacle is detected in the working area for improved operator situational awareness (optional); enhanced KOMTRAX® Plus for immediate remote diagnostics of machine heath and performance with operator ID and integration with third-party telematics systems; and energy savings operation ECO guidance provides operator with real-time recommendations to improve machine operation efficiency.

The Komatsu WA900-8 has a completely redesigned front and rear frame and loader linkages making it the most durable chassis in the model history, according to the company. This is complemented by a new standard brake cooling system to reduce brake oil temperature, all of which results in longer brake-service life. An engine pre-lubrication system raises engine oil pressure before startup to ensure full lubrication of all engine components, the company added.