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Mon June 21 2021

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Linden Comansa completes 2100 tower crane series

22 May 12 The new 21 LC 660 tower crane completes the Linden Comansa LC2100 series.

It is available in four versions, with maximum load of: 18t, 24t, 36t and 48t. It fits in ther series between the 21 LC 550 (18t and 24t) and the 21 LC 750 (24t, 36t and 48t).

Main characteristics:

Model

Version
(Maximum load)

Max. jib length

Jib-end load

Max. free-standing height

Normal

With PoweLift

21 LC 660

18 tonnes

39,680 lbs.

80 meters

262.5 ft.

 6,000 kg
13,227 lbs.

6,600 kg
14,550 lbs.

82.4 meters

270.3 ft.

24 tonnes
52,910 lbs.

80 meters

262.5 ft.

5,250 kg
11,574 lbs.

5,780 kg
12,742 lbs.

80.9 meters
265.4 ft.

36 tonnes

79,360 lbs.

80 meters
262.5 ft.

5,250 kg
11,574 lbs.

5,780 kg
12,742 lbs.

80.9 meters
265.4 ft.

48 tonnes

105,820 lbs.

80 meters
262.5 ft.

4,750 kg
10,472 lbs.

5,230 kg
11,530 lbs.

80.9 meters
265.4 ft.

 

The 21 LC 750 tower crane, launched in 2009, has been one of Linden Comansa’s most succesful models, mainly due to the design of the slewing part, and ease of assembly. A similar flat top design has been applied in the 21 LC 660 tower crane and the first jib and counterjib sections are assembled together directly over the slewing platform through fast conections. The manufacturer says that this saves time, reduces costs in auxiliary equipment, and improves the safety.

Most of the jib sections of the 660 are the same as those on the 750, making them interchangeable. 

For the tower of the 21 LC 660, a new mast section has been designed, named D35, which is cheaper than the D36 tower section of the 21 LC 750. Both 5.5m high by 2.5m wide, which makes them compatible and able to share the same hydraulic jacking cage. The D35 mast sections can be divided in four panels, are designed to be easy to assemble and transport, and are joined to other sections by pins.

Two standard tower configurations have been created: The first one uses only D35 tower sections, allowing the crane to achieve a freestanding height of 73.3m on fixing angles, or 69.9m on stationary or travelling base. The second configuration combines D35 with D36 sections, and allows the 21 LC 660 to reach a height of 78.8m on fixing angles and 80.9m on base version. The modularity of the different tower sections from Linden Comansa allows alternative configurations, making a a freestanding height of 124.8m possible.

The 21 LC 660 features Linden Comansa's latest controls systems:

  • Effi-Plus high speed hoist mechanisms, for hoisting speeds of up to 244m per minute.
  • PowerLift System, which improves the load chart 10% by slowing speeds.
  • Slewing mechanisms with frequency control, for maximum energy efficiency.

The standard hoist engine, with 110kW, has a Lebus drum with capacity for 1,450m of rope. Two other engines, with rope capacity of 790m and with 110kW and 65kW respectively, are available as optional. 

This full LC2100 series now has five models. (See below.) 

Model

Version

Maximum jib length

Jib-end load (on max. jib length)

Max. free-standing height

(Max. load)

Normal

With PoweLift

21 LC 290

12 tonnes

26,450 lbs.

74 meters
242.8 ft.

2,700 kg
5,950 lbs.

2,970 kg

6,547 lbs.

64.9 meters

212.9 ft

18 tonnes

39,680 lbs.

74 meters
242.8 ft.

2,700 kg
5,950 lbs.

2,970 kg

6,547 lbs.

64.9 meters

212.9 ft

21 LC 400

12 tonnes

26,450 lbs.

80 meters

262.5 ft.

3,000 kg

6,610 lbs.

3,300 kg

7,275 lbs.

96.8 meters
317.5 ft.

18 tonnes

39,680 lbs.

80 meters
262.5 ft.

3,000 kg

6,610 lbs.

3,300 kg

7,275 lbs.

96.8 meters
317.5 ft.

21 LC 550

12 tonnes

26,450 lbs.

80 meters
262.5 ft.

4,000 kg

8,810 lbs.

4,400 kg

9,700 lbs.

87.9 meters

288.7 ft.

18 tonnes

39,680 lbs.

80 meters
262.5 ft.

4,000 kg

8,810 lbs.

4,400 kg

9,700 lbs.

87.9 meters

288.7 ft.

24 tonnes
52,910 lbs.

80 meters
262.5 ft.

3,250 kg

7,160 lbs.

3,370 kg

7,429 lbs.

86.4 meters

283.7 ft.

21 LC 660

18 tonnes

39,680 lbs.

80 meters

262.5 ft.

 6,000 kg
13,227 lbs.

6,600 kg
14,550 lbs.

82.4 meters

270.3 ft.

24 tonnes
52,910 lbs.

80 meters

262.5 ft.

5,250 kg
11,574 lbs.

5,780 kg
12,742 lbs.

80.9 meters
265.4 ft.

36 tonnes

79,360 lbs.

80 meters
262.5 ft.

5,250 kg
11,574 lbs.

5,780 kg
12,742 lbs.

80.9 meters
265.4 ft.

48 tonnes

105,820 lbs.

80 meters
262.5 ft.

4,750 kg
10,472 lbs.

5,230 kg
11,530 lbs.

80.9 meters
265.4 ft.

21 LC 750

24 tonnes
52,910 lbs.

80 meters

262.5 ft.

7,000 kg

15,430 lbs.

7,700 kg

16,975 lbs.

80.9 meters
265.4 ft.

36 tonnes

79,360 lbs.

80 meters
262.5 ft.

7,000 kg

15,430 lbs.

7,700 kg

16,975 lbs.

80.9 meters
265.4 ft.

48 tonnes

105,820 lbs.

80 meters
262.5 ft.

6,500 kg

14,320 lbs.

7,150 kg

15,763 lbs.

80.9 meters
265.4 ft.


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