Case’s 621F and 721F (pictured) wheel loaders now meet Tier 4 Final emissions standards. Like the Tier 4 Interim models, each model is equipped with a selective catalytic reduction solution that treats emissions separately with diesel exhaust fluid and does not require the engine to re-circulate exhaust gas. Additional fuel savings can be achieved with a standard engine shutdown feature found on each model that allows the operator to limit engine idle time. Each model features a 6.7-liter engine. The 621F and 721F wheel loaders produce 162 and 179 net rated horsepower (121 and 133 kW), respectively. Both machines are also available with XT (tool carrier) or XR (extended reach) linkage and specialty configurations.
The latest Cat D6N dozer is designed to deliver greater ease of operation, a 10 to 15 percent boost in fuel efficiency and up to 10 percent better productivity compared to the previous model. The D6N is the first dozer in its size class to offer advanced GRADE technologies as standard equipment. The D6N is powered by a Cat C7.1 ACERT engine rated at 166 net horsepower, and meets U.S. EPA Tier 4 Final emission standards. For tackling more complex design plans, the D6N can be outfitted with optional GRADE technologies combining digital design data, in-cab guidance and automatic blade control.
Doosan expands its Tier 4 wheel excavator lineup with the DX210W-5 for applications that require an excavator with rubber tires. The “dash-5” excavator replaces the “dash-3” (interim Tier 4) model. In addition to a Tier 4 diesel engine, this model features improved fuel efficiency from a new Smart Power Control selectable engine mode that consists of two systems — Variable Speed Control and Pump Torque Control — that are designed to work together to improve machine efficiency while maintaining productivity and reducing fuel consumption.
Hitachi’s ZX210-6 and ZX210LC-6 (pictured) excavators are equipped with an EPA Final Tier 4/EU Stage IV 160 horsepower Isuzu engine that does not require a diesel particulate filter. Operating weights are 47,245 lbs. for the ZX210-6 and 48,238 lbs. for the ZX210LC-6. These models can be equipped with a grade reference-ready package that features sensor mounting brackets that are welded to the boom, arm, dogbone, counterweight and main frame of the excavator at the factory, reducing system installation time. Both excavators also come with an optional auxiliary function lever that provides proportional control for auxiliary hydraulic attachments.
Hyundai’s HL900 series line of Tier 4 Final-compliant wheel loaders feature cabs up to 10 percent larger than previous models, reconfigured for additional floor space and improved visibility. An optional Smart Start ignition system for password- or Bluetooth key-enabled machine start is also available on the HL series, as is a new automatic weighing system. Smaller models in the line are powered by Cummins engines while larger models use Scania engines. All models achieve Tier 4 Final emissions compliance through a combination of selective catalytic reduction and diesel oxidation catalyst systems using diesel exhaust fluid. Other features include Hyundai’s Eco Pedal, programmable auto-engine shutdown (available with the smart key option), optional fingertip controls, Eco Gauge and a five-speed direct drive lock-up clutch.
The John Deere 210G LC excavator features a 159 horsepower certified Final Tier 4 John Deere PowerTech PVS 6.8L engine. A larger hood offers improved engine access, without impairing visibility. For convenience, the nine-pin diagnostic connector was moved into the cab to reduce diagnostic testing time for technicians. Other improvements include a single side ground level fluid filter service, which moves the engine oil, fuel and hydraulic pilot oil filters to ground level on the right side of the machine. Optional sensor mounting brackets can be factory welded to the boom, arm, dogbone, counterweight and mainframe, enabling immediate install of Topcon, Trimble, Leica or other grade reference systems.
Featuring a 191 HP Tier 4 Final engine, Komatsu’s WA380-8 wheel loader uses up to six percent less fuel than its Tier 4 Interim predecessor. Komatsu’s SmartLoader Logic software combines with a lockup torque converter, which activates in second, third and fourth gears to provide optimal engine torque for improved acceleration, hill climbing, a higher top speed and fuel savings. The WA380-8 emphasizes breakout force and balance, making it a good machine for carrying pipe, sand and other aggregates; site clean up and support; digging into piles and backfilling.
Terex compact wheel loaders, ranging from 50 to 101 horsepower, are equipped with Tier 4 Final Deutz engines. Articulated steering is designed to give the line excellent turning ability, up to a 40-degree angle, and to help the loader bucket maintain movement toward the material even at full steering angle. The closed-circuit hydrostatic drive provides a high power output per unit mass and has infinitely variable and step-less speed. Parallel kinematics allow the operator to quickly and precisely lift loads to height without constant readjustment of the load angle.
Volvo’s E-series short swing crawler excavators offer integrated working modes, which allow the operator to choose the best work mode for the application — Idle, Fine, General or Heavy. To further improve fuel efficiency, the ECR145E and ECR235E (pictured) are equipped with auto idle and engine shutdown features. The auto idle function reduces engine speed to idle when the controls are inactive for a pre-set amount of time. If the machines are left idle for longer, the optional auto engine shutdown feature will automatically turn off the machine.