4t Tower Crane Qtz5008 with Jib Length 50m
We started manufacturing tower cranes from the very year our firm founded in 2001. And now can offer tower cranes with a maximum lifting load form 2.5t to 16t, which is from QTG25, QTZ25, QTZ31.5, QTZ40, QTZ63, QTZ80, QTZ100, QTZ125, QTZ160 and QTZ260, to meet the demand of various kinds of customers in different construction works.
With climbing cage, our crane can change the height itself by adding and reducing its standard sections.
And the same tower crane can have different lengths of jib with different quantities of jib sections. We will offer the drawing of the same when the goods are delivered.
The pedestal can be fixed type of crossing beams and can also be with counterweight to save the space.
Our tower crane with drivers cabin with electric fans or air conditioners according to customers requirements.
For the safety, we can also offer indicator to show the load and height data of crane in service.
| Mechanism Operation Level | Lifting Mechanism | M5 |
| Slewing Mechanism | M4 |
| Trolley Traveling Mechanism | M4 |
| Rated torque(kn.m) | 500 |
| Working range | Maximum Working Range | 50 |
| Minimum Working Range | 3 |
| Lifting height | Free-stand | |
| 29 | 120 |
| Max lifting load | 4 |
| Lifting Mechanism | Motor type | YZTD200L -4/8/24 |
| Multiplying factor | a = 2 | a = 4 |
Lifting capacity/velocity
t/(m/min) | 0.8/64 | 2/32 | 2/9 | 1.6/32 | 4/16 | 4/4.5 |
| Power | 15/15/4 |
| Trolley Traveling Mechanism | Motor type | YDEJ L -4/6 |
| velocity(m/min) | 22/33 |
| Power | 2.2/1.5 |
| Slewing Mechanism | Motor type | YZR132M2-6 |
| velocity(m/min) | 0.6 |
| Power | 3.7 |
| Lifting Mechanism | velocity | 0.4 |
| Working pressure | 20 |
| Power | 4 |
| Total power | 20.9(exclude climbing mechanism) |
| Counterweight | Max working range | 50 | 44 | 38 |
| Weight | 8.9 | 7.72 | 6.54 |
| Working temperature(ºC) | -20~+40 |
Description of QTZ series tower Crane
1) the tower crane is one of the most popular type and hot-selling self-erecting tower crane, which is researched and designed by Institute of Building Mechanization of China Academy of Building Research. It absorbs many advanced technology both from China mainland and abroad.
2) We adopt to use Dual drawbars structure on lifting boom, which enables the lifting boom to be unfer no stress at lifting surface other than uniaxial stress, and moreover, it gets rid of the stress peak. It greatly improves the fatigue safety performance of lifting boom.
3) Adopts VVVF stepless speed variation device for lifting, radius changing and slewing mechanisms, to make sure it works steadily and effectively, it also lowers the maintenance cost.
4)We can offer crane standard sections such as the FO/23B standard sections for customers to choose from.
SHIPPING INFO 1. Send commissioning video to you before shipment;2. By Sea for batch goods, for Port receiving;3. Customers specifying freight forwarders or negotiable shipping methods!4. Delivery Time: 5-20 days against advanced payment. PACK INFO Packaging Details: Plywood CasePackaging Details: wooden case,iron frame,at customer's option PAYMENT TERMS1. Payment: T/T, Western Union, MoneyGram, PayPal; 30% deposits; 70% balance before delivery.2. MOQ: 1 set.3. Warranty : 1 years for the whole set machine.4. Package Information: air cushion/wooden case/steel box OUR SERVICE----Providing timely delivery, standby engineers are ready to solve any of your problem in time.----We provide one years warranty for the steel structure. ----Providing all-embraced warranty of products quality, work-site installation guidance.----Providing ample spare parts and training of operation and maintenance.----Engineers have more than 5 years' experience.