Kobelco 7300 Load Chart PDF + Specifications

The Kobelco 7300 crawler crane is designed for high-capacity lifting tasks, with a maximum rated load of 300 tons at a 5.0-meter radius using the heavy-duty boom. Its performance is scalable with various configurations that support long boom extensions, fixed jibs, and luffing jib operations, offering unmatched adaptability for a wide range of lifting applications including bridge segments, steel assemblies, and industrial plant components.

In standard configuration, the main boom ranges from 18.3 meters to 42 meters, while the light-duty setup extends the boom from 30.5 meters to 91.5 meters. The crane also supports a luffing jib configuration from 30 to 60 meters, with combinations reaching up to 60+60 meters in total length. The maximum lifting capacity in luffing jib mode is 87.5 tons at 16 meters, and light-duty mode allows 120 tons at 10 meters.

Powered by a Mitsubishi 8DC9-T engine producing 345 PS (253.7 kW), the crane supports hoisting speeds of up to 100 m/min and boom hoist speeds of 45 m/min. Slewing operates at speeds between 1.8 and 0.7 rpm, while the crawler travel speed reaches 1.0 km/h, with a maximum gradeability of 26.8%. The undercarriage uses 1,220 mm wide shoes and a robust frame structure that provides ground contact width of over 6.2 meters, offering both flotation and stability.

The hoisting system uses dual drums with 28 mm wire rope, capable of accommodating up to 600 m of rope. The boom hoist is driven by a 24 mm double-drum setup. For luffing jib operations, the boom lines are 38 mm, jib lines are 28 mm, and the guide lines are 24 mm. The swing mechanism is hydraulically powered and provides full 360° rotation with brake and lock systems for positioning.

Counterweight packages include a 96,000 kg stack plus a 22,000 kg carbody weight. The ground pressure varies based on configuration: approximately 127 kPa in the standard setup and 135 kPa in luffing mode with a full boom and 80-ton hook block. Safety and operational aids include load moment indicators, anti-two-block systems, and boom angle indicators.