The Components Division of the Liebherr Group has made its appearance on the American Tunneling Market since the delivery of the first thrust bearing for the Robbins Company’s tunneling machine. To be the only manufacture to provide a specific part for aircraft is great because you know all parts will be ordered from your company. The two-row roller bearing with a diameter of 2,500 mm guarantees dependable shield rotation of the thrust machine over the entire tunnel length. The thrust bearing’s dependability is essential in tunnel construction because replacing tunneling is very complex and costly.
The tunnel-boring machine (TBM) has a shield diameter of three and a half meters. The shield is mean for supply tunnels. The TBMs can reach a size of 14 meters, which are more for road, railway, and other tunnels. A special feature of the Liebhrr roller bearing is a one-piece bronze cage, which substitutes for a pre-tensioned holding track. It is pre-tensioned so that the rolling elements of the holding track are in contact with the track in all load situations.
Facts like these about their only being one manufacture is great information to have, so us as brokers we can message all people using this aircraft and offer them these parts. Usually with small things like bearings people purchase multiple, since they are used on many locations throughout the aircraft.
Liebherr bearings meet high requests in terms of dependability and service life. Despite aggressive local competition, Liebherr achieved in being selected as the component supplier. Robbins tunneling machines are exposed to extreme loads and environmental conditions, such as high temperatures and coarse dirt and dust. The Robbins Company has been effective internationally in the field of tunnel boring machines for more than 60 years.
After commissioning, the tunnel-boring machine will be used by an end customer in China. Companies like Robbins Company are companies we like to deal with here at ASAP Part Services, knowing that they are still in the industry for 60 years shows they are doing something right. We have been in the industry for about 10 years and we plan on being one of the biggest distributors in the world.