Simex’s TF 800/V rotary cutters

Italian firm Simex has produced a new TF 800/V rotary cutter for tunnel excavation applications. Two of the new rotary cutters were used to help construct the key Varzo Tunnel link in Italy, close to the border with Switzerland.
January 6, 2017 Read time: 1 min
Italian firm 1141 SIMEX has produced a new TF 800/V rotary cutter for tunnel excavation applications.

Two of the new rotary cutters were used to help construct the key Varzo Tunnel link in Italy, close to the border with Switzerland.

Attached to a pair of 2300 Komatsu PC138 US short-radius excavators, and featuring a modified boom and special bracket, the rotary cutters were used to cut around 20cm deep and 40cm wide into the crown of the tunnel in order to create the inserts for two-hinged steel ribs every 1.75m, anchored to ties with a C-shaped fastening element (totalling 44 elements).

The cutters, deployed by Italian contractor Ceprini Costruzioni (CC), were equipped with drums measuring a width of 40cm and diameter of 110cm, and fitted with 144 Betek VC 33 bits with a 2.2cm bit holder.  Both cutters were said to have proven productive and reliable and were operated without interruption for 164 hours each.

www.simex.it

View more stories

For more information on companies in this article

Simex
Komatsu

Related Content

  • Element 6 launches a long-life milling cutter at Conexpo 2014
    March 8, 2014
    Element 6 is now looking to push into North America with its innovative milling cutter products. Part of the De Beers Group, Element 6 has benefited from its parent’s expertise with diamond technology and is offering milling cutters featuring diamond chips.
    Read More
  • Wirtgen offers sophisticated concrete paving system
    January 6, 2017
    Versatility and high performance are key features of the new SP84i slipform paver from Wirtgen. The machinie runs on four steerable crawler tracks and features its mould fitted between the crawler tracks. With a power output of 180kW, the machine can use electric and hydraulic vibration to pave roadways and surfaces and concrete can be selectively distributed by the spreading plough or spreading auger. Wirtgen slipform pavers can be used to lay concrete pavements with a double cross fall of up to 3%.
    Read More
  • Wirtgen offers sophisticated concrete paving system
    February 19, 2014
    Versatility and high performance are key features of the new SP84i slipform paver from Wirtgen. The machinie runs on four steerable crawler tracks and features its mould fitted between the crawler tracks. With a power output of 180kW, the machine can use electric and hydraulic vibration to pave roadways and surfaces and concrete can be selectively distributed by the spreading plough or spreading auger. Wirtgen slipform pavers can be used to lay concrete pavements with a double cross fall of up to 3%.
    Read More
  • Italy's strategic tunnel link
    August 21, 2012
    The world's largest tunnelling machine is completing Italy's important road connection between Bologna and Florence - Adrian Greeman reports For just under a decade a huge programme of highway construction has been underway in the mountainous region between Bologna and Florence, realigning a section of the A1 highway nearly 70km long. The new section, through major tunnels and across high viaducts, will greatly increase capacity on Italy's most important highway.
    Read More

Highlighted Content