DENZAI K.K. has announced the purchase of its second Liebherr LR12500-1.0 crawler crane — the first in the world to feature a new MBW (Modular Ballast Wagon) configuration, developed jointly by Liebherr and Cometto specifically for DENZAI. The system enables the use of Cometto MSPE 60t self-propelled electronic modular trailers as the ballast wagon.
Scheduled for delivery to Japan in March 2026, the 2,500-ton capacity crane will significantly enhance DENZAI’s capabilities in heavy lifting operations, particularly for offshore wind projects and large-scale power plant construction both in Japan and abroad.
DENZAI President and CEO, Kohki Uemura, commented: “We are excited to introduce our second Liebherr LR12500-1.0. This unit features the new-generation MBW ballast wagon system using the Cometto MSPE 60t. The configuration enables operation within confined spaces, essential for Japan’s offshore wind projects. The crane’s first assignment will involve port handling and pre-assembly work for Vestas V236-15.0 MW turbines.”
Florian Ritzler, Head of Sales Management Crawler Cranes at Liebherr, added: “With the new option of using SPMTs as a ballast wagon for the LR12500-1.0, Liebherr offers maximum flexibility and efficiency. The SPMTs can be controlled directly via the crane’s control system, eliminating the need for additional operators — a unique solution in the industry. This innovation enhances both safety and versatility, allowing customers to use SPMTs for other purposes when not serving as a ballast wagon.”
