QAY300 adopts 7-axle chassis, 5-axle steering, 4-axle drive, elliptic section jib, and single-cylinder no-rope automatic stretch and retract, having strong lifting performance. Through the application of the fieldbus technique, the computer integration control technique makes the product failure diagnosis highly intelligent, and makes the control highly automatic. The mature application of limit load in accordance with the power makes the machine energy efficient, low noisy, environmental friendly, and safe. The variable-rigidity air and hydraulic suspension technique makes the machine comfortable to drive and have good stability and longitudinal trafficability.
The additional equipment of the machine includes super-lift device, luffing jib, and fixed lengthening jib, which increase the lifting performance and working scope in an unimaginable proportion. The working radius and lifting height are respectively up to 86m and 116m.

Dimension	Unit	QAY300
Overall length	mm	18210
Ov 1ff8 erall width	mm
Overall height	mm	4000
Weight
Total weight in travel	kg	79680
Front axle load (axle 1, 2, 3)	kg	11625
Rear axle load (axle 4, 5, 6, 7)	kg	11201
Power
Engine model		TAD722VE
		OM502LA.III/5
Engine rated power	kW/(r/min)	194/2100
		420/1800
Engine rated torque	N.m/(r/min)	2700/1080
Travel
Max. travel speed	km/h	75
Min. turning diameter	m	24
Min. ground clearance	mm
Approach angle	°	19
Departure angle	°	19
Max. gradeability	%	40
Oil consumption per 100km	L
Main performance
Max. rated total lifting capacity	t	300
Min. rated  radius	mm
Turning radius at turntable tail	m
Max. lifting torque	kN.m	9526
Base boom	m
Fully extended boom	m
Fully extended boom + jib	m
Outrigger longitudinal distance	m	8.7
Outrigger transverse distance	m	9.2
Working speed
Boom luffing time	s
Boom full stretching time	s
Max. swing speed	r/min
Max. speed of main winch (single rope) (no load)	m/min
Max. speed of aux. winch (single rope) (no load)	m/min