QTZ model 6 tons tower crane for building construction

Introduction:

• Leading performance: the boom length in full extension is 44.5m, the performance leading in 5%. The grade ability is

40%, which make the machine have good road adaptability.

• The unique U boom and plug-in boom head make the load-carrying capacity more balanced, and lift more smoothly.

• The unique stretch and retract technique prevents the misoperation; the stretch and retract of the boom is safer and

more reliable.

• The control system is optimized by 8 patents; lifting, rotation, and luffing are easy and reliable.

• The innovative jib system adopts embedded block, plug-in boom head and octagon jib, which has excellent lifting

performance and safe and reliable lifting work.

• The unique stretch and retract technique avoids the bend of the core pipe and cylinder and the break of the boom

caused by misoperation, improving the safety of the operations.

• Eight patent techniques ensure the smooth, high efficiency and energy conservation of the lifting, rotation, and

luffing systems.

• Adopt the new hydraulic motor with big torque starting point, making the secondary lifting safer.

• The torque limiter adopts colorful LCD display, realizing the intelligence of the failure diagnosis. The precision is

ahead of the industry.

• The humanity design makes the cab and control cab more spacious, and easy to operate.

Parameters:

Model	QTZ31.5	QTZ40	QTZ63B	QTZ63C	QTZ80A	QTZ100A	QTZ125A
Radius(m)	40/42	47/45	56/50	52	60/55	55	60/55
Hook Height(m)	31.6	32.5	41	40	46	45	46
Max. Height(m)	100	100	141	140	200	180	200
Max. Hoisting Capacity(t)	3	4	6	6	8	8	8
Standard Mast Section Size(m)	1.5* 1.5*2.4	1.5* 1.5*2.5	1.835* 1.835*2.5	1.615* 1.615*2.5	1.835* 1.835*2.5	1.835* 1.835*2.5	1.835* 1.835*2.5
Hoisting Speed(r/min)	26.8/5.2	76/38	80/40/8.5	80/40/8.5	80/40	100/50	100/50
Slewing Speed(r/min)	0.77	0.77	0.62	0.62	0.65	0.55	0.6
Luffing Speed(m/min)	43.2/21.6	43.2/21.6	42/21	42/21	60/30/10	60/30/10	60/30/10