In order to reduce the emission of greenhouse gases in accordance with the climate protection goals, more and more construction machines with electric motors are being developed, as the upcoming bauma will show. There are other benefits driving this trend as well. For example, electric motors are quiet, which makes them suitable for use in quiet areas, such as near hospitals or city buildings. They also protect operators and the environment from exposure to direct exhaust gases, making it possible to carry out many processes even in poorly ventilated areas. Another advantage is that electric motors are considered to be low maintenance and efficient, which means they guarantee low running and energy costs. So it makes sense that the “road to zero emissions” is also one of the main topics of this year’s bauma. Many exhibitors have already announced new electrical solutions for the fair.
Reversible vibrating plate with battery
These include the first direct drive battery operated reversible vibrating plate. Manufacturer’s Apu3050e Wacker Neuson uses the proven hydraulic adjustment system to change direction, just like in conventional models. With a working width of 50 cm and a centrifugal force of 30 kN, the machine is easy to control and has the lowest overall height of any reversible vibratory plate on the market, making it ideal for use in narrow furrows.
Emission-free compaction with e-tandem rollers
In the future, electrically powered tandem rollers may be the answer where carbon-neutral compaction is needed on a larger scale. Ham will present eight models of the HD CompactLine series as a world premiere at bauma. They are powered by a maintenance-free lithium-ion battery with a capacity of approximately 23 kWh. In addition, the energy released by the traction and vibration motors during braking is used for recovery. The battery has enough capacity for a full working day.
The e-drive also significantly reduces noise emissions, making the e-tandem rollers suitable for all areas that require particularly quiet compaction. Since these settings often also require a low vibration load, the compaction specialist introduces an electric combi roller with oscillation in addition to electronic oscillating and vibrating rollers.
Fully electric concept for skid steer loader
The T7X, still in the concept phase, is the world’s first fully electric crawler loader. Its producer, Bobcat, will use bauma to continue collecting customer feedback from different segments. The goal is to better assess the market opportunities for the machine in Europe, the Middle East and Africa. With its 62 kWh lithium-ion battery, the T7X can run continuously for four hours. Its mobile payload is just under 1,400 kg. Unlike all other loaders, the new machine requires virtually no fluids: Bobcat has completely replaced the traditional hydraulic system with an electric drive system, including electric cylinders and electric drive motors. The only fluid in the car consists of approximately four liters of environmentally friendly coolant.
Fully electric concrete mixer
Putzmeister imagine a future of fully electric concrete transport thanks to its iOntron e-mixer. The vehicle’s battery has a capacity of 350 kWh, which means that one battery charge is enough for five or six trips to urban areas, usually enough for a full working day. The vehicle can simply be recharged if several trips are planned. The mixer can be recharged at full power overnight in a DC charging station. Its virtually silent operation allows for unlimited use even in locations subject to strict noise regulations – a significant competitive advantage when bidding in metropolitan areas. Rising fossil fuel prices also make the e-drive an affordable alternative.
The e-package of Tadano is an electrohydraulic system with an integrated 32 kW electric motor that ensures silent and emission-free crane operation. This solution was presented at the last bauma in 2019. At that time it was only available for one crane vehicle. At this year’s show, Tadano will unveil that five of its AC cranes, meanwhile, can be ordered with the E-Pack or existing cranes retrofitted with it.
The Japanese manufacturer will also offer a preview of the world’s first fully electric crane for rough terrain. The machine is currently in an advanced development phase and is expected to be launched in late 2023. It will be able to drive to and from the construction site and do all the lifting using only the energy provided by its batteries.
Other exhibitors have already announced new electronic machines, but they will wait until bauma has started. These include the successor to the 5055e four-wheel drive electric wheel loader Kramer-Werke. In addition, the company promises a new electric telehandler, without revealing further details at this time. And that’s one more reason why it’s worth visiting Munich’s bauma in October.