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QTZ50(4810) Top-kit Tower Crane

Min. Loading: 1t
Max. Loading: 4t
Working Radius: 3~48m
Free Standing Height: 29m
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QTZ50(4810) Top-kit Tower Crane

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All of QTZ50(4810) hammerhead tower crane’s performance and technical index catch up with national most advanced levels. QTZ50(4810) tower crane’s rated load moment is 50t·m, effective radius is 3-48m, max. rated lifting capacity is 4t, independent height is 29m, the maximum height can reach 120m when anchored to building. QTZ50(4810) top-kit tower crane works fast, stable and efficient. The hoisting mechanism realized low-speed heavy loading and high-speed light loading. All of the safety devices are adopted mechanical or mechatronics product, sensitive and reliable. From design, model selection, counting to drawing, the whole process is completed by professional computer, the design is scientific, the manufacturing is precise and elaborated. QTZ50 can both meet the construction requirement of common civil building of small and middle cities and high-rise and super high-rise building of big cities, and also are widely applied to bridge, water conservancy project and big-span industrial factory building and so on.


 Top-Quality Q345B Manganese Steel
1. Top-Quality Q345B Manganese Steel
The original material is adopted from Baosteel and Laigang Group, scale purchase lowers the cost. The mast section of standard section, frame, the upper chord and lower chord of the jib, pull rod, tower hat are made of Q345B manganese steel, the strength of extension is improved by 30%, more safe and reliable.
Advanced Fully-Automatic Welding and Mixed Gas Arc Welding
2. Advanced Fully-Automatic Welding and Mixed Gas Arc Welding Technology
The feeding, welding and end-surface processing are all completed by the fully-automatic robot, and main parts are also welded by robot. Xinyu adopt international the most advanced carbon dioxide and argon mixed gas arc welding technology, which of big penetration, high welding quality and stability.
Famous Brand Parts and Components
3. Famous Brand Parts and Components
We adopt Schneider electrical components, aviation-level plug, and stainless steel power box, all of which guarantee low failure frequency and easy installation. The hoist equipment adopts famous JIANGTE or DESHENG brand machine which are infused top-quality engine oil to ensure high reliability, non-maintenance and low repairing frequency. The slewing bearing adopt Ma On Shan FY or Xuzhou Rothe Erde equipment, duel-tempering-process technology makes the running more stable and greatly prolongs the whole machine’s using life.
Concentrate On Detail Quality
4. Concentrate On Detail Quality
High-rigidity bolts adopt ship-level Dacromet technology which keeps the bolts from rusting more than 10 years. The tightening force of nf bolt is improved 30% compared to traditional bolt. The weight limiter is designed as tension ring structure, and the hoist limiter and luffing limiter are protected by cast aluminum shell, all of which largely prolong the devices’ using life.
Excellent Painting Technology
5. Excellent Painting Technology
The whole equipment adopts impeller blasting technology thoroughly cleans the steel surface, removes internal stress of welding, enhances steel’s rigidity and hardness, improves the paint film’s adhesive force. Two priming and one finishing paint make the equipment beautiful, and improve the corrosion-resistance ability by 2 times. The platform, trolley and guard rail are processed by hot galvanizing after pickling and phosphating, further improving the rust-proof ability.
Comprehensive Safety Protection
6. Comprehensive Safety Protection
Hoisting, trolleying, slewing are all equipped with moment or weight limiters; the wire are equipped with anti-skipping and anti-breaking device; the slewing trolley are equipped with anti-breaking axis and anti-falling and anti-tipping device; the electrical system adopts overflow and overload protection, and the PLC can realize self-diagnostics for easy maintenance.


Technical Data


Delivery & Installation

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After-Sales Service

1. Guarantee time 
All of the life time of XINYU machine, free for the first 12 months except the wrong operation.
2. Free Spare parts
XINYU will prepare the one set spare parts and delivery them along with the machine.
XINYU have the 12 workshops to produce every parts and we can produce spare parts to deliver them to you within 2 days.
3. Technical supporting
XINYU Engineer will train you workers to make sure that they know every detail about the machine to make sure they know how to deal with the urgent situation and can repair some normal problem
4. Office
If we have more than 5 orders in one Area, we will set one office there to take care the after-sales service.

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