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On the basis of LW520F Wheel Loader, LW521F Wheel Loader gets improved in terms of hydraulic system, working mechanism, frame assembly and cab, by which greatly improving the machine performance in the aspects of machine technial data, reliability, operation comfort, working efficiency, machine maintenance and out-looking shape.
　　·Rational and optimized designing of the machine frame improve the stability of the machine.
　　·The hydraulic system is of integrated dual-pump system, which is featured in fuel-saving and high efficiency, and while reducing the total working cycling time, by which improving the working efficiency.
　　·The gear-shfiting control adopts flexible controlling mechanism, which features in high reliability and easy operation. The Reverse warning device makes it more safe and stable during working.
　　·The more rational axle load distributioin makes the machine has more competative advantage in term of traction.
　　·The critical articulated joint adopts anti-dust enclosed lubrication, so the pin shaft and pin sleeve have longer service life.
　　·The out-looking shape is of streamline designing, with XCMG features.
　　·The canopy-top cab, adopting " Korean Green" glass, is of unique out-looking shape and harmonious color matching.
　　·The injection-moulded instrument panel is very nice in out-looking. The cab is standardly equipped with heater.
　　·The hood is of non-metal material, which features in noise-absorbing and easy maintenance.
　　·The 3.0 m3 bucket is equipped on standard machines, fitted with cutting edge, which improves the machine reliability and endurability.
·The power unit used on the machine is of WeiFang engine: WD61567G3-28.

Item	Technical Data	Unit
L / W / H	7720/3000/3280	mm
Rated loading capacity	5	t
Operating weight	16.5	t
Max.traction force	140	kN
Static side-dumping load	10000	kg
Min. ground clearance	450	mm
Min. turning radius	5670	mm
Steering angle	35 degrees to both Right and Left	°
Speed
Forward I-Gear	0-11	km/h
Forward II-Gear	0-36	km/h
Reverse speed	0-15	km/h
Hoisting height	6000	mm
Traction height	1090	mm
Engine model	Shanghai Engine G6135G1b
Rated power/R.P.M	162/2200	KW/r/min
Cylinders/Diameter/Stroke	6/135/150	mm
Standard bucket capacity	3.0	m3
Optional bucket capacity	3.5	m3
Max. break-out force	145	KN
Lifting capability	80	KN
Total cycling-time	12	s
Unloading height	3110	mm
Unloading distance	1180	mm
Optional attachment	Clamp and side-dumping bucket
Tyre specification	23.5-25
Layer number	16