Kobelco 7120-1F

The Kobelco 7120-1F is a robust 120-ton hydraulic crawler crane that blends heavy lifting capability with exceptional configuration versatility. With a maximum lifting capacity of 120 metric tons at a 5.0-meter radius, this crane is built to tackle complex and high-load projects. Its crane boom reaches up to 61.0 meters, and the long boom can be extended to a remarkable 79.2 meters for extended reach applications.

For projects requiring additional height and flexibility, the 7120-1F can be equipped with a fixed jib configuration of up to 61.0 meters plus a 30.5-meter jib or a tower jib setup with a 51.7-meter tower and 44.2-meter jib. These extensions allow it to lift lighter loads (up to 20 tons on the tower jib) at significant elevations or over long distances.

Powering the crane is a Hino P11C-UN engine delivering 247 kW at 2,000 rpm, meeting NRMM Stage IIIA and EPA Tier III emission standards. A 400-liter fuel tank supports extended operations. The hydraulic system includes four variable-displacement pumps delivering up to 31.9 MPa of pressure, with dedicated circuits for hoisting, swinging, and travel functions.

Crawler-type undercarriage provides exceptional stability, with 910 mm wide shoes and a top travel speed of 1.3 km/h. The crane features a spring-set, hydraulically released braking system and independent hydraulic drives for each track, allowing both skid and counter-rotational steering.

The upper structure includes full-flow hydraulic control, smooth swing operation at 2.1 rpm, and front and rear hoists capable of single-line speeds up to 120 m/min. The cab is fully enclosed with full-vision windows, air conditioning, adjustable seating, and ergonomic controls, ensuring operator comfort and safety.

A standard 52.3-ton counterweight provides necessary stability across all configurations, and the machine’s transport weight is approximately 36.8 tons when stripped down. With steel-welded boom and jib constructions, a wide selection of hook blocks, and optional free-fall brakes, the Kobelco 7120-1F remains a highly adaptable crawler crane for large-scale and complex lifting operations.