QUY90 hydraulic crawler crane is designed on the basis of advanced technology and excellent special manufacturing experience. It features high reliability and advanced technology.

Features：
1. Compact structure and small swing radius (4800mm).
2. Main hydraulic elements are imported. The variable displacement motors are provided for hoisting system.
3. Hydraulic motor and reduction gear for propelling are built into the side frame within the shoe width. Hydraulic motor and reduction gear feature small volume and large drive force.
4. The hydraulic motor and reduction gear for hoisting and derricking are built into the drums with compact structure. 
5. Newly designed platform for mounting the drums easily. Mounting cylinders used inside the track frame.
6. Newly folding A-frame
7. The engine conforms to European NRMM Stage III.
8. Load-sensing valve applied in pump control hydraulic system；The engine electronics and crane control are optimally matched due to the function of power and limit load adjustment of main pump.
9. A closed loop swing system driven by two hydraulic motors features smooth slewing movement and precise stopping position. Free swing can be carried out.
10. The advanced luffing jib derricking structure is convenient to assembly.
11. 360t/m lifting torque