Specifications:
The document outlines the specifications for the Tadano GR-300EX crane. It features a Cummins QSB6.7 engine, a 4-cycle, turbocharged, and after-cooled diesel engine with a piston displacement of 6,700 cm3. The maximum output is 160 kW at 2,500 rpm, and the maximum torque is 843 N-m at 1,600 rpm. The crane has an electronically controlled full automatic transmission and hydraulic power steering with three steering modes: 2-wheel front, 4-wheel coordinated, and 4-wheel crab.

Outriggers:
The crane is equipped with 4 hydraulically operated H-type outriggers, which can be controlled simultaneously or independently from the cab. The extension width for each outrigger is detected automatically.

Hydraulic System:
The hydraulic system includes two variable piston pumps for telescoping, elevating, and winches, and a tandem gear pump for steering, swing, and optional equipment. The system is equipped with an air-cooled type oil cooler, and the hydraulic oil tank capacity is approximately 380 liters.

Performance:
The crane has a maximum lifting capacity of 30,000 kg at 3.0 m. The boom is a 4-section full-length power telescoping type with a fully retracted length of 9.7 m and a fully extended length of 31.0 m. The extension speed is 21.3 m in 91 seconds, and the elevation speed is 0˚ to 81˚ in 44 seconds. The crane also features a 2-staged swing-around boom extension with triple offset angles of 5˚, 25˚, and 45˚.

Safety Features:
The crane is equipped with the Tadano Automatic Moment Limiter (AML) which provides audible and visual warnings of approach to overload and automatically cuts out crane motions before overload. It monitors each outrigger's extended length and programs the corresponding rated lifting capacity table.

Additional Features:
The crane includes a main winch and an auxiliary winch, both with variable speed types driven by hydraulic axial piston motors. The single line pull is 38.2 kN, and the single line speed is 118 m/min at the 4th layer. The crane also has a tail swing radius of 3,330 mm.