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| Cat M Series 2 motor graders  The newest motor grader models from Caterpillar, the 140M2 and 160M2, along with their all-wheel-drive (AWD) counterparts, the 140M2 AWD and 160M2 AWD, are equipped with clean-burning, fuel-efficient engines meeting Tier 4 Interim/Stage IIIB emissions standards. The new models also deliver added value for the customer by lowering operating costs and enhancing productivity, operator convenience and serviceability. M Series 2 models continue to improve on the legacy of quality set by the original M Series and are designed for a broad range of tasks, including heavy blade work, road maintenance, ripping and precision-finishing applications.The new M Series 2 models all use the Cat C9.3 ACERT engine with Variable Horse Power (VHP), and all have a wider net-variable-horsepower range than their M Series predecessors. The 140M2 and 160M2 have ranges of 193 to 243 (144 kW to 181 kW) and 213 to 263 (159 kW to 196 kW), respectively. Net horsepower ratings for the 140M2 AWD and 160M2 AWD are 202 to 243 (151 kW to 181 kW) and 223 to 263 (166 kW to 196 kW), respectively. The Cat NOx-Reduction System captures and cools a small volume of exhaust gas, then returns the cooled gas to the combustion chamber to reduce nitrogen-oxide emissions. The CEM is an efficiently packaged aftertreatment unit that includes a Diesel Oxidation Catalyst (DOC), a Diesel Particulate Filter (DPF) and the Cat Regeneration System (CRS). The no-maintenance DOC assists in reducing the hydrocarbon within the exhaust stream and the DPF Particulate Matter (PM), or soot. At the heart of the M Series 2 design is the Cat control system, which uses two electronic joysticks to provide complete, precise control of the machine. The control system results in nearly 80 percent fewer hand and wrist movements compared to conventional motor-grader controls; the net result is enhanced operator comfort and efficiency. The intuitive design helps both new and experienced operators be more productive. Beginning mid-2011, the M Series 2 models will offer the new Cat Grade Control Cross Slope system. Cat Grade Control is a complete machine control and guidance system which integrates traditional grade control with standard machine components at the factory. This optional factory-installed and calibrated cross slope system provides automatic cross slope control capability, ready to operate from the moment it leaves the factory. In addition, Cat Cross Slope is fully upgradeable and compatible with AccuGrade™ systems to grow with customers. Operators can closely match machine ground speed to the operating situation with the 8F/6R direct-drive powershift transmission, which uses the Cat Electronic Clutch Pressure Control system to modulate gear changes and Controlled Throttle Shifting for smooth directional changes without the inching pedal. Programmable Autoshift lets the operator match shift parameters to the application. The M Series 2 front frame uses continuous top- and bottom-plate construction for exceptional strength, and the rear frame features a robust box-section hitch design, cast axle mounting and integrated rear bumper for durability in the harshest applications, such as ripping. write your comments about the article :: © 2011 Construction News :: home page |