Competition is tough in the market for earthmoving equipment. Manufacturers from Europe, the US, Japan, Korea and China are all vying for increased market share across the globe. Firms are developing new models and widening product lines, with a wide range of excavator, wheeled loader, dozer, grader and soil compactor models all coming to market.
Crawler excavators are the biggest selling construction machines and this market is of key importance, with manufacturers introducing various new models.
To meet Stage V engine emissions regulations, the DX300LC-7 is powered by a new Doosan DL08 engine, without exhaust gas recirculation (EGR). This uses DOC/DPF+SCR aftertreatment technology that only requires maintenance until the machine has operated for 8,000 hours. The machine is also factory-installed with the DoosanConnect wireless fleet monitoring system, which offers a web-based fleet management solution.
The novel hybrid system retains the firm’s proven electric swing motor/generator, storing power from swing deceleration in a capacitor for use by the electric swing motor.
Bucket capacities for the R 934 vary from 1-2.5m³. and the machine is said to have a robust x-shaped undercarriage type, with a new wide long crawler (WLC) undercarriage for stability on soft ground.
Volvo CE is introducing its 20tonne EC200E excavator, aimed at one of the most competitive segments of the excavator market. The machine’s specifications position it between Volvo CE’s existing EC220E and EC180E units for the EMEA region.
The machine’s Stage V-certified D4 Volvo engine is optimised for power, fuel-efficiency and reliability. Performance features are said to include high lifting and digging forces, for faster cycle times and optimum productivity.
For the wheeled loader market, Caterpillar’s new M Series Medium Wheel Loaders range from the 950M to the 982M and benefit from lower operating costs due to extended service intervals, improved operator comfort and the option of Stage V emissions compliance.
Engine oil filter and hydraulic oil filter change intervals have been extended from 500 hours to 1,000 hours. Based on estimated savings for engine and hydraulic fluids, filters, and sampling costs during a 6,000 hour period, costs can be reduced by 16-23%
The Cat Advanced Productivity application is a web-based tool used to visualise machine production-related data and complements Cat PAYLOAD, Cat Production Measurement 2.0. The tool is accessed from VisionLink and includes a customisable report dashboard.
Hitachi has introduced a rugged duty package for its versatile ZW180-6 and ZW220-6 wheel loaders. Additional features provide extra protection for the operator and key components, boosting safety and durability and reducing unscheduled downtime and maintenance costs.
Hitachi claims high performance along with low fuel consumption for the Stage IV compliant engines, which use selective catalytic reduction (SCR) and do not require diesel particulate filters. The ZW180-6 weighs from 14.8-15.25tonnes depending on specification and has a 129kW diesel, while the ZW220-6 weighs from 18-18.4tonnes and has a 149kW diesel.
Doosan is launching Stage V compliant versions of its 30tonne DA30 and 40tonne DA40 articulated dump trucks. The DA30 and DA40 were upgraded in 2018 with a range of new features including a cab and a self-levelling front suspension system.
The Stage V models now have Scania 9litre and 13litre engines, which are said to be easier to service than before.
Like all Doosan ADTs, the new models feature an articulation hinge positioned behind the turning ring to provide equal weight distribution to the front axle even during maximum steer articulation. This combined with a free-swinging rear tandem bogie ensures equal weight distribution for each wheel and six-wheel contact and drive.
The firm says that its TA400 offers a maximum payload of 38tonnes and is intended to deliver cost-effective production at large-scale construction projects. The TA400 has a heaped capacity of 23m3 and is powered by a fuel-efficient Scania DC13 engine delivering 331kW. Terex Trucks says its fuel-efficient engine range is globally emissions compliant and meets the requirements of EU and North American legislation without the need for a diesel particulate filter (DPF). This is achieved with new selective catalytic reduction (SCR) technology, combined with exhaust gas regeneration (EGR) and a variable geometry turbo (VGT).
For finishing work, Caterpillar’s new D6 bulldozer comes with the choice of a four-speed fully automatic drive or a high-drive electric transmission. The D6 automatic transmission provides increased productivity and up to 20% better fuel efficiency than its three-speed predecessor. Its XE electric transmission version is said to offer up to 35% better fuel efficiency and increased agility compared to the previous model D6T. The diesel runs at continuous RPM to power the generator, using less fuel. Constant power to the ground, continuous push and greater manoeuvrability allow faster cycle times. The D6/D6 XE is available in VPAT - Variable Power Angle Tilt - or push arm configurations with standard or two widths of Low Ground Pressure (LGP) undercarriage. A variety of blade types, track shoe widths and rear attachments enable the machine to be optimised for different duties.
Like the TD-15, the 41.25tonne, 246kW powered TD-25 crawler dozer has a new pressurised cab. The dozer also has a new bogie undercarriage to boost operator comfort on rocky applications, and is claimed to deliver high drawbar pull and productivity. Improvements in the suspension and hydraulics further reduce noise and vibration.
For job sites requiring tight turns in confined spaces, the two functions can be supplemented by the wheel-lean function. When not required, the wheel-lean function can be disconnected from the combined steering, leaving wheel steering angle and frame articulation moving simultaneously.
Precise control of the lean, steering and articulation angles are crucial for maximising efficiency when operating in restricted areas. But operators concentrating on manoeuvring may be less able to navigate a site and carry out grading, reducing productivity.
John Deere is now offering two of its grader models in Europe, which will be sold and supported through the Wirtgen network. Other machines from the
The two graders from the eight-model John Deere grader range being offered are the 622GP and 672GP, as these meet best with European requirements. The machines offer high-performance, high-output diesels, a 6.8litre delivering 169kW and a 9litre delivering 190kW respectively and which meet the latest emissions requirements, while offering low fuel consumption. The 622GP has a moldboard width of 3.66m while the 672GP has a moldboard width of 4.27m. These EH models are equipped with both ergonomic joystick controls and a conventional steering wheel.
The package allows customers to document each pass, even when using continuous dynamic compaction control applications with oscillation. The system is available for the firm’s H 7i VIO and H 13i VIO compactors.
Also new for the soil compaction range are the C models, which benefit from extra climbing ability. The rollers have a more powerful hydrostatic drive that can deliver up to 30% more torque than the standard model, providing better traction and climbing ability for heavy earthworks or compacting cohesive soils.