Kobelco 7055-3

The Kobelco 7055-3 crawler crane is a robust and versatile 55-ton capacity machine engineered for a wide range of applications in civil engineering, foundation work, and general construction. With a maximum rated lifting capacity of 55 tons at a 3.7-meter radius, this crane is built to handle demanding lifts reliably and safely.

The crane offers a flexible boom system ranging from 9.1 meters up to 51.8 meters, enabling it to adapt to varied site requirements and lifting conditions. For extended reach or complex lifting scenarios, the crane supports optional jib attachments from 6.1 meters to 18.3 meters in length. Combining boom and jib configurations, the maximum working length can exceed 60 meters, providing excellent coverage on congested job sites.

Powered by a Mitsubishi 6D16-TLE2A engine producing 147 kW (200 PS) at 2000 rpm, the Kobelco 7055-3 delivers reliable power for hoisting and slewing operations. The main and auxiliary winches offer variable rope speeds ranging from 120 m/min under light loads to precise creep speeds, enabling efficient, smooth lifting and positioning. The swing system provides a rotation speed of 4.0 rpm, ensuring quick and stable slewing even under load.

The crane features a maximum travel speed of 2.4 km/h and gradeability up to 40%, allowing it to move confidently across uneven or inclined ground. The wide crawler tracks distribute ground pressure evenly (approximately 72.3 kPa), ensuring stability during operation while minimizing damage to the work surface.

The Kobelco 7055-3 is equipped with multiple safety systems, including load moment indicators, boom angle limiters, wind speed alarms (optional), and high-capacity brake drums with heat-dissipating fins to ensure reliable and safe performance during continuous heavy-duty work. The machine also offers various hook block configurations, ranging from a 55-ton five-sheave hook to smaller 7-ton ball hooks, giving operators flexibility for different lift requirements.

Additional options include auxiliary winches, a third drum, clamshell attachments, vibro hammer support, and customizable boom and jib sections to tailor the crane for specific project needs. The operator cab is designed with ample visibility, ergonomic controls, and modern instrumentation, prioritizing both safety and comfort.

Altogether, the Kobelco 7055-3 crawler crane offers a solid combination of lifting power, structural reliability, and operational flexibility, making it an ideal choice for contractors seeking dependable performance in mid-range crawler crane lifting tasks.