The design of new solutions for the 21LC1050 Flat-Top tower crane, launched in Sept 2018, allowed COMANSA's R&D team to apply some of these developments to two of the manufacturer's most successful cranes: 21LC660 and 21LC750. Mainly designed for large industrial projects, energy, mining and PPVC construction, the upgrades have improved their performance significantly.

The versions of 24, 36 and 48-ton of both models have increased their maximum load capacity to 25, 37.5 and 50 tons. This improvement is achieved by use of a compacted wire rope, of smaller diameter, and an optimized design of the now lighter trolley-hook set. Such changes not only increase the maximum load capacity of cranes, but also improve the loads in all radius, including the jib-end load.

During the design of the 21LC1050, space restrictions at construction sites that exist in some countries due to regulation, were taken into account. That is why a highly modular counter-jib was created for such a model, which allows up to six different configurations according to the jib length. The advantages of this new counter-jib and its good acceptance in the market encouraged COMANSA to apply this design to cranes 21LC660 and 21LC750, which will improve the counter-jib radius of both models when they are erected with reduced jib-lengths. Thus, when the 21LC750 crane is erected with a 50m jib (164ft), the counter-jib radius is 25m instead of 31 of the previous design (82ft instead of 102ft).

Comansa 21LC660
COMANSA's models 21LC660 and 21LC750 improve their performance significantly

As a novelty in terms of jib length, COMANSA now offers an optional 90m radius (295.3ft) for special applications. This option is available for the 21LC660 and 21LC750 models, as well as for the 21LC1050 crane.

Models 21LC660 and 21LC750 (except the 20ton version of 21LC660) now feature a new optional hoist mechanism (132kW - 177hp), which allows speeds of up to 300m per minute (984 ft/min). COMANSA also added the Effi-Plus system to the optional 110 kW hoist mechanisms (148hp), available for all versions of such models. This system, which was already implemented in the other motors of both models, increases the hoist speed by almost 15% with light loads. These two mechanisms greatly improve the productivity of the crane, especially when working at large heights. Both motors can have wire rope capacity of 720m or 1,570m (2,360 and 5,150 ft), which allows these cranes to work with heights under hook of up to 785m (2,575 ft).

To simplify and unify the range of tower sections, the 21LC750 now has the D36B as a standard section. This mast is the same as that of the 21LC1050 Flat-Top and the LCL700 luffing-jib crane, and is fully compatible with the D36 mast section, which was the standard for the 21LC750, and will now be discontinued.

The "new" 21LC660 and 21LC750 cranes are now available worldwide and are shipped with the XL-size CUBE cab as standard. With its fully glazed front part and its spacious design, the new cab represents an important improvement in the productivity and comfort of the crane operator.

The 21LC660 and the 21LC750 cranes are two of COMANSA's models with best acceptance globally because of their productivity and competitiveness. These cranes have worked in projects in Germany, South Korea, Canada, Angola, Singapore, Sweden, Qatar, Australia, Argentina, Hong Kong, Ivory Coast, etc.

Few manufacturers offer tower cranes with 50-ton maximum load in their range, and most of those cranes have pendant lines, with the disadvantages that this represents. In addition to the Flat-Top design, models 21LC660, 21LC750 and 21LC1050 offer advantages such as ease and safety of erection and enormous versatility and modularity.

Summary of improvements of 21LC660 and 21LC750 models
  • Increase of the loads, including maximum load capacity: 25, 37.5 and 50 ton/ 55,120, 82,670 and 110,230 lb (not applied in model 21LC660 20 t - 44,090 lb)
  • New modular counter-jib design for reduced radius
  • Optional 90-m jib length for special projects (295.3 ft)
  • New 132kW / 177hp hoist mechanism (not applied in model 21LC660 20-ton 44,090 lb)
  • Increase of hoist speeds in the 110 kW mechanisms (148 hp) due to the Effi-Plus System
  • Larger wire rope capacity.
Click Here
To Know More or to Contact the Manufacturer
Please let us know your name.
Invalid Input
Please let us know your Designation.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.
Our other Value-Added Services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Invalid Input
Invalid Input
Invalid Input
Terex continues to strengthen its foothold in India’s Construction Equipment Market by bringing in new technologies, expanding its product portfolio, and entering new construction territories. Having marked its entry

Read more ...

Tower crane manufacturers are expanding their range with newer models and making them more cost-effective as cost of production rises and competition heats up. NBM&CW investigates.

Read more ...

A new digital platform has been launched to disrupt and simplify the process of crane rental procurement. MYCRANE – a global business-to-business (B2B) platform allows users to submit details of their lifting requirements

Read more ...

Demand for safe, versatile, and reliable material handling products like Telehandlers is growing across a wide spectrum of applications in India, says Deepak Shetty, CEO & Managing Director, JCB India.

Read more ...

The wolf is known for its adaptability and strength, which also distinguish the red WOLFFs on construction sites around the world. Latest proof is provided by two WOLFF 1250 B luffing jib cranes on the

Read more ...

Sinoboom Electric Articulating Boom Lifts Launched in Southeast Asia To mark the arrival of Sinoboom AB14EJ and AB16EJ articulating boom lifts into the Schmetterling rental fleet, a product launch event was held to showcase the series of Sinoboom machines at their

Read more ...

Enerpac has introduced new split-flow pump upgrade kits that provide the ability to network multiple pumps and coordinated lift points for higher accuracy synchronisation. The new split-flow kits allow

Read more ...

Alpha continues its leadership in mobile tower crane segment with its SG 24X30 self erecting mobile tower crane in technical collaboration with SOIMA of Portugal which delivers solutions for challenges on

Read more ...

With construction of major infra projects seeing a revival, expectations are rife that the market for mobile cranes will soon witness higher sales, including of the new, more advanced products

Read more ...

Liebherr Mining is gearing up to showcase its new mining solutions portfolio at the world’s largest mining trade show, MINExpo International 2021 in Las Vegas, USA, from September 13–15, 2021. Covering a total area

Read more ...

Tower crane anti-collision and zone protection systems are now an essential safety attachment to prevent collisions with other tower cranes and nearby structures. P.V. Ramdev, MD - Everest Engineering

Read more ...

Spartan has many awards and certifications to boast of; according to Vikram Mehta, MD, Spartan Engineering Industries, the reasons lie in the company’s focus on design and development of components

Read more ...

Top Material Handling Equipment suppliers, namely KION India, Jungheinrich India, Hyundai, Godrej, ACE, and ElectroMech-Yale are providing end-to-end Intra-Logistics Solutions and gearing up to meet the anticipated

Read more ...

We are very optimistic and bullish about the market in 2021 and expect the market volume for MHEs to have a very robust growth over that of 2020.

Read more ...

With modernisation of the logistic sector, expansion of warehousing and logistic hubs across the country, and growing e-commerce, we expect at least 20% growth y-o-y in this segment

Read more ...

We are expecting a double digit y-o-y growth of 18-20% this year, when the market is expected to cross 13000 units, led by demand from FMCG Warehousing, Rentals, and e-Commerce

Read more ...

There is a perceptible shift towards products with cleaner, greener and smarter technology in the warehouse equipment segment. Data for FY21 shows that electric powered equipment occupies 56% of the MH market

Read more ...

“With focus on environment and sustainability, electric material handling equipment is being more widely accepted. Battery-operated electric forklifts and pallet trucks will become part of ‘smart’ warehouses”

Read more ...

ElectroMech is getting involved with material handling equipment beyond industrial overhead cranes. We have added Yale forklifts from Hyster Yale Group (USA) to our portfolio, and are offering aerial work platforms

Read more ...

25 Liebherr tower cranes are involved in the construction of the Überseequartier, a new district in Hamburg. This is part of the well-known HafenCity urban development project and comprises 14 buildings of various

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.