75t crawler crane 

Engine (Standard Offering )
▪▪Model: DCEC (Cummins China) QSB5.9-C210 Diesel Engine;
▪▪Type: 4-stroke, water-cooled, vertical in-line 6 cylinders, direct injection, turbo-charger, intercooler, complied with European Off-way Tier III Emission Standard and Chinese Off-way Tier III Emission Standard;
▪▪Displacement: 5.9L;
▪▪Rated power: 154kW/2200rpm;
▪▪Operation power: 147kW/1800rpm;
▪▪Max. Torque: 820N·m/1500rpm;
▪▪Starter: 24V-6.0kW.

Electrical Control System
▪▪Self-developed SYIC-II integrated control system is adopted with higher integration, precise operation and reliable quality;
▪▪Control system consists of power system, engine system, main control system, LMI system, auxiliary system and safety monitoring system. CAN BUS is used for data communication between controller, monitor and the engine;
▪▪Monitor: the working parameters and status are shown on the monitor, such as the engine speed, fuel volume, engine oil pressure, servo pressure, wind speed, engine working hours, lifting conditions and boom angle.

Hydraulic System
▪▪Main pumps: open variable displacement piston pumps are adopted to provide oil supply for main actuators of main machine;
▪▪Gear pump: dual-gear pump for swing and control circuit;
▪▪Control: main pump adopts positive flow proportional control; main load winch motor adopt piston motor of variable displacement; aux. load winch and boom hoist winch motor adopts piston motor of fix displacement. The operating components adopt two cross hydraulic handles, one dual travel pedal control valve, to control various actuators proportionally;
▪▪Way of cooling: heat exchanger, fan core and multi-stage cooling;
▪▪Filter: large flow, high precision filter, with bypass valve and transmitter, which can remind the user to replace the filter element in time;
▪▪Max. pressure of system: 32MPa;
▪▪Main/aux. load hoist, boom hoist and travel system: 32MPa;
▪▪Swing system: 24MPa;
▪▪Control system: 5MPa;
▪▪Hydraulic Tank Capacity:305L.