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Liebherr 280ECH16

 - 2003

Tower Crane

USA (WA - Washington)

Linden Comansa 10LC140

 - 2006

Tower Crane

USA (WA - Washington)

Liebherr 200ECH10

 - 2004

Tower Crane

USA (WA - Washington)

Comedil CTT181A8 TS21

 - 2005

Tower Crane

USA (WA - Washington)

Comedil Cbr32h 4
125 000 USD

Comedil CBR32H-4

 - 2006

Tower Crane

USA (TX - Texas)

Comedil CTT561A-20

 - 2006

Tower Crane

USA (WA - Washington)

Potain G3 28b

Potain G3-28B

 - 1974

Good condition - Tower Crane

Canada

Potain H3 36 B
140 830 USD

Potain H3 36-B

 - 1986

Very good condition - Tower Crane

Canada

Liebherr MK 100

 - 2008

Tower Crane

USA (TX - Texas)

Harnischfeger M320rt
14 400 USD

P&H Harnischfeger M320RT

 - 1977

11210,6 ft - Good condition - Tower Crane

USA (FL - Florida)

Benazzato 21 28 800
80 000 USD

Benazzato 21-28-800

 - 2005

Very good condition - Tower Crane

USA (NV - Nevada)

Potain Igo Ma13

Potain IGO MA13

 - 2005

Tower Crane

USA (WA - Washington)

Kroll K 10000

Kroll K-10000

 - 2007

328 ft - 308,4 ft - Very good condition - Tower Crane

Canada

Potain Igo Ma13

Potain IGO MA13

 - 2006

Tower Crane

USA (WA - Washington)

Potain Igo 50

Potain IGO 50

 - 2006

Tower Crane

USA (WA - Washington)

Potain Igo 50

Potain IGO 50

 - 2006

Tower Crane

USA (WA - Washington)

Potain Igo 50

Potain IGO 50

 - 2005

Tower Crane

USA (WA - Washington)

Liebherr 316ECH12

 - 1999

Tower Crane

USA (WA - Washington)

Liebherr 316ECH12

 - 2001

Tower Crane

USA (WA - Washington)

Potain HDT80

 - 2007

Tower Crane

USA (WA - Washington)

Manitowoc Igo Ma21
96 000 USD

Manitowoc IGO MA21

 - 2007

Average condition - Tower Crane

USA (PA - Pennsylvania)

Liebherr 130HC

 - 1975

Tower Crane

USA (WA - Washington)

Liebherr 180HC

 - 1978

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1983

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1980

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1990

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1988

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1982

Tower Crane

USA (WA - Washington)

Liebherr 281HC

 - 1989

Tower Crane

USA (WA - Washington)

Potain Igo T85

Potain IGO T85

 - 2008

Tower Crane

USA (WA - Washington)

Peiner Smk308

Peiner SMK308

 - 2000

Tower Crane

USA (WA - Washington)

Comedil Gts511

Comedil GTS511

 - 2000

Tower Crane

USA (WA - Washington)

Comedil Ct602

Comedil CT602

 - 1998

Tower Crane

USA (WA - Washington)

Comedil Cbr36h 4

Comedil CBR36H-4

 - 2005

Tower Crane

USA (WA - Washington)

Terex Sk415

Terex SK415

 - 2008

Tower Crane

USA (WA - Washington)

Terex Sk415 20

Terex SK415-20

 - 2007

Tower Crane

USA (WA - Washington)

Comedil CTT331

 - 2011

Tower Crane

USA (WA - Washington)

Comedil CTT331

 - 2010

Tower Crane

USA (WA - Washington)

Comedil CTT331

 - 2009

Tower Crane

USA (WA - Washington)

Comedil CTT331

 - 2008

Tower Crane

USA (WA - Washington)

Comedil CTT331

 - 2007

Tower Crane

USA (WA - Washington)

Comedil CTT231

 - 2011

Tower Crane

USA (WA - Washington)

Comedil CTT231

 - 2010

Tower Crane

USA (WA - Washington)

Comedil CTT231

 - 2009

Tower Crane

USA (WA - Washington)

Comedil CTT231

 - 2008

Tower Crane

USA (WA - Washington)

Comedil CTT231

 - 2007

Tower Crane

USA (WA - Washington)

Comedil CTT181

 - 2010

Tower Crane

USA (WA - Washington)

Comedil CTT181

 - 2009

Tower Crane

USA (WA - Washington)

Comedil CTT181

 - 2008

Tower Crane

USA (WA - Washington)

Comedil CTT181

 - 2007

Tower Crane

USA (WA - Washington)

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Tower crane

General information and history of Tower Crane

Tower crane is a kind of material handling equipment which belongs to the biggest construction machines. It's used for lifting, lowering and transporting heavy materials on construction sites, railway stations and harbours. They can work in three dimensions because of the slewing unit situated either at the bottom or on the top of the crane.

The silhouette of a tower crane resemblies a tall, long-necked bird with a big beak, hence the word "crane", originating from a bird family. In other languages like German (Kran) and French (grue) the machine is also named after the bird.

The first series tower crane made for construction industry was built in 1908 in Maschinenfabrik Julius Wolff & Co. The crane became so popular that Julius Wolff sold quickly about 10.000 units. These tall machines with a control cab on the top were perfectly suitable to work on narrow streets which in that time were dominant in European cities.

Another milestone in the tower cranes development was the invention of a fast assembly crane, made by Hans Liebherr. The German manufacturer made use of a market niche and presented his bottom-slewing crane TK-10 at the Frankfurt Trade Fair in 1949.
 
Tower crane
Tower crane
 

The state of Art of Tower Crane

A contemporary tower crane consists of a tower (usually a lattice steel mast), a jib, a counterweight and a control cab. Depending on the location of the slewing unit tower cranes are classified as top-slewing or bottom-slewing ones.

A bottom-slewing tower crane has a stewing ring near the base what enables the whole mast to rotate. In case of a top-slewing crane it's only the top part that rotates. A bottom-slewing crane is easy to erect. The entire crane is transported to the working site by a tractor unit whereas a top-slewing crane travels in parts and needs another lifting device, usually a mobile crane, to be assembled. That's why the use of top-slewing cranes is more labor- and cost-intensive. However, their advantage is the lifting capacity, higher than in bottom-slewing cranes.

The maximum height of a typical tower crane is 265 ft (80 m) without support. If a crane is tied into a building the maximum height can be even longer. The maximum reach is then 230 ft (70 m) and maximum lifting power – 18 tons. So much for an average crane but the biggest functioning tower crane, the Liebherr 4000HC 80, can lift 80 tons and has 110 m lifting height.

The well-known manufacturers of tower cranes and other heavy machinery are Comansa, Comedil, FM Gru, Jaso, Liebherr, Peiner, Potain, Raimondi, Saez and Terex.