7.5 Ton Flat Top Tower Crane For Building Construction

7.5 Ton Flat Top Tower Crane For Building Construction

This 7.5-ton flat-top tower crane features a rated lifting capacity of 7.5 tons, a rated lifting moment of 400 kN·m, and a maximum operating radius of 30 meters. With a total weight of 28 tons, it is constructed from Q355B high-strength structural steel that has undergone non-destructive testing and integral heat treatment, ensuring high tensile strength and impact resistance, as well as durability against deformation or cracking during long-term operation. The crane is equipped with a Variable Frequency Drive (VFD) system for smooth hoisting, slewing, and trolley traversing, effectively minimizing load sway; it also features an electromagnetic normally-closed brake that automatically locks upon power loss, preventing load slippage. A real-time monitoring system tracks load, wind speed, and operational trajectory, automatically triggering alarms and halting operations in the event of anomalies. Its compact, tie-rod-free flat-top design—with external dimensions of 8200×2500×3800 mm—allows for easy relocation and positioning on confined job sites, making it ideal for residential construction, municipal projects, and small-to-medium-scale infrastructure sites.
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Description
Technical Parameters

Features

The Tower Crane

 

Traditional guyed tower cranes require extensive labor and slow installation; in contrast, our 7.5-ton flat-top, non-guyed model requires only 3–4 personnel and can be fully assembled in just a day and a half-cutting labor needs in half and accelerating site setup. Unlike older models with oversized components that incur high logistics costs, this model fits entirely into standard shipping containers, eliminating the need for special oversized-cargo permits and reducing overall freight costs by 25%. Designed for compact urban sites, the crane features a streamlined profile and an integrated anti-collision system for safe multi-crane operations. Variable-frequency drive technology ensures smooth starts and stops without load jarring, while power-loss braking prevents hook slippage, easily meeting international safety standards. The unit is constructed from flaw-detected Q355B steel and utilizes genuine new parts, ensuring low failure rates and long-term cost savings. Components undergo multi-layer anti-corrosion treatment to withstand maritime salt-spray exposure, allowing for immediate on-site assembly upon arrival without the need for additional rust removal or maintenance.

 

 

 

Core Strengths of the Manufacturer

 

 

Tower Crane Used in Construction

With 13 years of experience in flat-top tower cranes, Tianjin HUGE CRANE operates a production facility spanning over 100 mu (approx. 6.7 hectares). The site features standardized workshops, quality inspection zones, and an R&D center, all equipped with comprehensive CNC cutting and weld flaw detection systems; 100% of structural components undergo flaw detection to eliminate the risk of hidden cracks. We have a long history of supplying overseas engineering contractors and equipment rental companies and are well-versed in international site access standards; our cranes come with CE international type-test certification. Unlike low-cost, small-scale manufacturers, we utilize genuine parts from top-tier brands for all core electrical control and hydraulic components. This ensures superior sealing, stable power transmission, and low failure rates, eliminating the need for frequent replacement of wear parts.

 

 

 

Customer Benefits

 


Customers avoid the hassle of repeatedly comparing various small-scale manufacturers or constantly dealing with equipment breakdowns. A single unit offers stable performance for over a decade with significantly reduced maintenance costs and a faster return on investment through equipment rental; the total cost of ownership over the long term is far lower than that of low-priced, entry-level models. We prioritize quality components and technical support over competing on price alone. We do not cut costs by reducing steel thickness or using refurbished electronic control systems; instead, we prevent frequent downtime and repairs at the source, ensuring continuous operation at the job site.

 

Supporting Services

 

 

  • Cranes Used in High Rise Construction

    Pre-sales: Free provision of equipment layout plans, load verification, and multi-crane operation schemes tailored to the project's specific height and working radius requirements;
  • During-sales: Customization of freestanding heights and tie-in intervals; provision of complete factory inspection documentation and customs clearance paperwork; support for containerized shipping (either unpackaged or in fumigated wooden crates) suitable for long-distance maritime transport;
  •  After-sales: 24-hour online technical support; provision of both remote and on-site installation guidance; regular maintenance and operation training for client personnel; comprehensive warranty coverage; and readily available inventory of structural components, hoists, motors, brakes, and wear parts-ensuring rapid overseas shipment and replenishment to prevent prolonged downtime due to parts shortages.

 

 

Continuous Product Optimizations

 

Flat Tower Cranes

 

1. Structural Optimization: Thickened main chord tubes and upgraded heat treatment processes enhance wind resistance without increasing the machine's overall weight, ensuring greater stability during operations in windy coastal regions;
2. Electrical Control Upgrade: Standard resistor-based speed control has been fully upgraded to a variable-frequency drive (VFD) system, reducing energy consumption by 15% and lowering motor heat generation, thereby extending the electrical system's service life;
3. Monitoring Upgrade: Comes standard with a "black box" safety monitoring system that automatically records operational data, meeting safety compliance and filing requirements for projects in Europe and the Americas;
4. Transport Optimization: The jib and counter-jib are designed to be disassembled into smaller modular sections that fit perfectly into shipping containers, maximizing internal space utilization and reducing ocean freight costs.

 

 

 

 

Technical specification

 

75

 

 

Technical specification

 

Parameter name

Specifications parameters

Rated weight

7.5t

Lifting moment

400kN·m

Luffing amplitude

3.5m-30m

Hoisting speed
(no-load/rated)

0.8-8m/min

Slewing speed

0-0.8r/min

Luffing speed

2-12m/min

Total machine weight

28t

Overall dimensions
(L×W×H)

8200×2500×3800mm

Power type

Electric drive
(380V/50Hz)

Working class

A5

Protection class

IP54

Braking method

electromagnetic normally closed brake

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