Kobelco MK500-2

The Kobelco MK500-2 is a highly capable 50-ton lattice boom truck crane designed for versatility in medium-scale construction and lifting operations. The crane features a maximum rated lifting capacity of 50 tons at a load radius of 3.4 meters. Its boom has a maximum length of 33 meters, with a minimum boom length of 5.6 meters, providing flexibility for different lifting applications. The main boom’s maximum hook height reaches up to 31.7 meters, and the crane is capable of operating at a maximum working radius of 30 meters. This makes the MK500-2 suitable for various construction projects, offering excellent reach and capacity.

The crane is powered by a hoisting system that allows for a main winch hoisting speed of 120 meters per minute under full load. The auxiliary winch provides a speed of 70 meters per minute. Both winches have a maximum line pull of 64.7 kN, ensuring reliable lifting even with heavy loads. The crane’s slewing speed is 4.0 rpm, which ensures smooth and precise positioning of loads. For boom elevation, the crane utilizes a hydraulic cylinder system, offering efficient lifting and lowering capabilities.

The MK500-2 operates on a 6×2 drive configuration, providing a balance of mobility and stability. The crane has a top travel speed of 15 km/h, with a gradeability of 20% (11.3 degrees), making it capable of maneuvering on challenging terrains. The carrier chassis has a total length of 11.9 meters and a width of 3.2 meters, ensuring a compact footprint for easy transport and deployment on tight job sites. The wheelbase is adjustable, with a total distance of 4.075 to 5.425 meters, and the overall height of the crane is 3.495 meters.

Powering the crane is a 7.684-liter Hino J08E-TM engine, delivering a rated output of 159 kW (216 PS) at 2,000 rpm, with a maximum torque of 797 Nm at 1,600 rpm. This engine provides enough power for the crane’s operations while maintaining fuel efficiency. The fuel tank capacity of 300 liters ensures sufficient operating time between refueling, making the MK500-2 suitable for extended job site operations.

The hydraulic system of the MK500-2 is designed with a two-stage pump system with variable displacement, ensuring that lifting, slewing, and boom operations are smooth and energy-efficient. The brake system includes an air brake for the carrier and a spring-type parking brake, ensuring safety and control when operating on various surfaces.

The MK500-2’s undercarriage features full air suspension with front leaf springs and rear tandem axles, improving driving comfort and stability during both road travel and site operations. The crane uses 11.00-20 tires, providing durability and traction in challenging conditions. With a total operating weight of 35,075 kg, the MK500-2 offers solid stability during lifting tasks, while its compact design allows for easy transportation to and from job sites.

In summary, the Kobelco MK500-2 is a robust and versatile truck crane designed for medium-sized lifting tasks. With its 50-ton lifting capacity, efficient hydraulic and winch systems, and reliable engine performance, it is well-suited for construction, infrastructure, and industrial projects where mobility and lifting power are essential.