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

  • Dynapac introduces new CC1600 compactor
    February 13, 2013
    Dynapac is introducing the CC1600 tandem roller for asphalt which features a state-of-the-art drivers’ platform and a water-cooled engine. It has vibratory drums as wide as 1,600mm, and is engineered primarily for asphalt compaction on streets and pavements in urban areas. It is also suitable for compacting sub-bases and base courses, and is adequate to follow a compact paver.
    Read More
  • New milling technology from leading players
    February 9, 2018
    Two major manufacturers, Caterpillar and Wirtgen, are introducing new milling machines. Both firms say that these new, high-production units will offer increased output compared with earlier generation equipment. From Caterpillar come the new PM820, PM822 and PM825 machines, which are half-lane milling machines able to handle full-depth removal of asphalt and concrete pavements in a single pass. The firm claims that these units are highly productive and highly manoeuvrable. In operation the machines weig
    Read More
  • Major project to construct landmark Bay Bridge in California
    October 31, 2012
    Iconic California crossing will offer seismic safety – Adrian Greeman reports A unique single-span single-tower suspension bridge is the iconic centrepiece of a dramatic renewal of the eastern Bay Bridge in California, crossing from San Francisco to Oakland. Tourists in San Francisco sometimes mix up their bridges, identifying as the famous Golden Gate, the double suspension bridge which runs across the wide San Francisco Bay. These serially linked bridges in fact form the Bay Bridge east to Oakland whereas
    Read More
  • Bonfiglioli opts for AC/DC electric drum drive for truck mixers
    January 6, 2017
    Bonfiglioli has developed an electric drum drive for the new hybrid truck mixer from CIFA, the concrete equipment specialist owned by Chinese manufacturer Zoomlion. The 500 series drum drive with electric motor offers drum rotation speeds from 15-22rpm and is suited to mixer capacities from 6-14m3. The drivetrain relies on an AC induction motor to turn the drum, which gets its power from an on-board battery pack. The electric drum drive can also be powered by mains electricity – the latter can be plugged in
    Read More

Highlighted Content