Continuous operation redefines heavy machinery
The new ZX135-7EB electric excavator marks a structural shift in construction equipment operation. Its main innovation is not just electrification, but the ability to operate continuously without interruptions.
Traditionally, autonomy has been the biggest obstacle to the adoption of electric machinery in heavy construction. Dependence on charging cycles limited its use to partial shifts or specific applications.
With this new energy architecture, operational continuity is no longer a restriction. This allows electric equipment to be integrated into high-demand projects without compromising productivity.
Dual system eliminates autonomy limits
The key advancement developed by Hitachi Construction Machinery lies in its dual energy mode system. This combines a 198 kWh battery with a direct connection to a three-phase electrical grid.
In autonomous mode, the electric excavator operates on its lithium-ion battery during conventional tasks. However, when connected to an external source, it can continue working while being powered, eliminating downtime.
This concept transforms the energy paradigm in heavy machinery. It is no longer about “charging to work,” but “working while charging,” enabling 24/7 operations in controlled environments.
Equivalent performance with lower total cost
One of the critical factors for adoption is performance. In this case, the electric excavator maintains capabilities equivalent to the ZX135-7 diesel model, without loss of power or digging speed.
Furthermore, the elimination of the internal combustion engine significantly reduces mechanical complexity. This translates into lower maintenance costs and higher operational availability.
Remote monitoring of the energy system adds a layer of intelligence. Operators can manage the state of charge and optimize energy use in real time, improving overall fleet efficiency.
Urban construction drives total electrification
The adoption of electric machinery is closely linked to environmental regulations. In urban environments, restrictions on noise and emissions are becoming increasingly strict.
The electric excavator responds directly to these demands. Its quiet, emission-free operation makes it an ideal solution for night work or in densely populated areas.
Events such as CONEXPO-CON/AGG 2026 show that this transition is already a commercial reality. Electrification in heavy machinery has moved from being an emerging trend to an evolving competitive standard.
Source and photo: https://www.hitachicm.com