Komatsu America Corp.

Komatsu Expanding its Family of Dozers with Integrated Grade Control

Following the successful launch of Komatsu’s first iMC (intelligent machine control) dozer into the North American market last June, Komatsu America will be expanding its family of iMC crawler dozers to include other popular-sized machines prior to Conexpo-Con/Agg 2014. By the time of the show, there will be four Komatsu America iMC dozer models in the market.

In the past, crawler dozers have been able to perform high-precision finish grading only after installing an add-on machine control system. However, Komatsu’s iMC dozers perform rough dozing as well as finish grading in automatic mode, because of the fully automatic blade control.

“The operator uses the machine control from start to finish, says Andy Smith, Operations Manager, of Sellers Contracting Services, LLC in Gordon, GA. “From the beginning of the cut all the way to the final grade, the operator switches it in automatic and does the cut straight across, comes back does it again, all in automatic.” 

Video: Why Komatsu's Grade Control is More Productive than Add-On GPS Systems

When rough dozing, the automatic blade control monitors blade load and adjusts blade elevation to minimize track slip and perform high-efficiency dozing. As work progresses closer to the target finish grade, the automatic blade control adjusts accordingly to provide finish grade performance with high-level precision. Improvement in combination rough dozing efficiency is up to 13 percent higher compared to add-on machine control systems for tested models.

With Komatsu’s iMC crawler dozers, typical add-on machine control system components mounted on the blade have been replaced with factory installed cab top GNSS (Global Navigation Satellite System) antenna, enhanced inertial measurement unit (IMU+), and stroke sensing hydraulic cylinders. These components along with the machine control monitor and controllers mounted inside of the cab are installed at the Komatsu manufacturing facility during machine assembly.

The integrated sensor package is robust and accurate and eliminates the daily hassles of installing/removing GNSS antenna(s) and cable(s) from the blade, including the wear associated with that removal.

Inside the cab, customer selectable dozing modes allow system response to be tailored to the current machine operation for optimized performance. Similarly, blade load settings are adjustable between pre-sets to match actual material conditions.

When the machine travels around the jobsite, the cab top GNSS antenna collects accurate surface data by measuring actual elevations. The stroke sensing angle cylinder measures the actual angle of the blade for high precision grading accuracy on cross-slope, blade angled or not.