Kobelco MK500

The Kobelco MK500 is a robust 50-ton capacity lattice boom truck crane, specifically engineered to handle a wide range of medium-sized lifting applications. With a maximum lifting capacity of 50 tons at a radius of 3.4 meters, it offers high performance and versatility on construction sites. The crane’s boom can extend from 5.6 meters up to 33.0 meters, providing a maximum hook height of 31.7 meters and a working radius of up to 30 meters. This configuration makes the MK500 ideal for tasks requiring both reach and strength, such as industrial construction, infrastructure projects, and equipment installation.

The winch system of the MK500 is highly efficient, with the main winch operating at hoisting speeds of 100, 70, or 50 meters per minute depending on the load, while the auxiliary winch runs at similar speeds. Both winches provide a maximum line pull of 64.7 kN, ensuring consistent and reliable lifting of heavy loads. The crane’s slewing speed is 3.7 rpm, allowing for smooth and precise rotation, and the main boom can be elevated or lowered hydraulically, offering excellent control during complex lifting operations.

The MK500’s carrier is built for both mobility and stability, featuring a 6×2 drive configuration with a switchable 6×4 mode for improved traction. It has a maximum speed of 15 km/h, making it suitable for transport between work sites, though it is primarily designed for heavy lifting tasks on-site. The crane has a gradeability of 20%, or 11.3 degrees, ensuring it can handle sloped terrains with ease. The total length of the carrier is 11.9 meters, with a width of 3.2 meters and an overall height of 3.495 meters. The adjustable wheelbase, ranging from 4.075 to 5.425 meters, helps maintain balance and maneuverability during travel.

The MK500 is powered by a reliable Mitsubishi 6D16-TLE2A diesel engine with a displacement of 7.545 liters, delivering 147 kW (200 PS) at 2,150 rpm. The engine generates a maximum torque of 780 Nm at 1,600 rpm, providing sufficient power for lifting operations as well as road travel. A 300-liter fuel tank supports long operating hours without frequent refueling.

The hydraulic system on the MK500 is optimized for smooth and responsive control, featuring a two-stage pump system that efficiently manages the power flow to the boom, winches, and slewing mechanisms. The crane’s braking system is equipped with air brakes on all wheels, combined with a spring-type parking brake for added safety during stationary operations. The rear axles also feature trailing arms and air suspension for improved stability and comfort during transportation.

The crane’s structure is built for durability and ease of use, with a full lattice-type boom made from IWRC (Independent Wire Rope Core) 6xFi ropes with diameters of 22 mm for both the main and auxiliary hooks. The boom sections are assembled with IWRC 6xWS (31) ropes for added strength, ensuring the crane can withstand the rigors of heavy lifting operations.

Overall, the Kobelco MK500 is an efficient and reliable crane that excels in both mobility and lifting capacity. With its powerful engine, advanced hydraulic system, and robust boom structure, it is an excellent choice for construction companies seeking a truck crane that can handle medium-scale projects with precision and ease.