ABOUT TEAM NEWS FAQ LITERATURE AND MANUALS SELECT LANGUAGE ENGLISH PORTUGUESE SPANISH + 1 (800) 533.0386 EQUIPMENT HOME / EQUIPMENT / PROPULSION CANS & ERECTORS To convert primary pipe jacking equipment to readily install several types of two‐pass lining systems, Akkerman offers customers customized Propulsion Cans and Erectors for the specific liner. Propulsion Cans consist of a series of hydraulic thrust cylinders arranged inside a trailing shield or can. When activated by the TBM operator, the cylinders advance the TBM, transmitting forces onto the previously constructed tunnel liner set. When operating in this manner, the thrust loads necessary to move the TBM are more consistent and limited to the face pressure to excavate the soil at the cutter head. The skin friction on the TBM in front of the Propulsion Can is not adversely affected by the tunnel’s overall length. Generally, larger diameter project installations require the insertion of additional product pipe inside the tunnel. Propulsion cans are also used on these projects directly behind the pipe jacking equipment for longer distances and smooth advancement control. An Erector is a mechanical device that assists with the construction of a two‐pass liner system. Due to space constraints, these systems are typically used in larger diameter tunnel boring machines (TBM), earth pressure balance machines (EPB), or shield tunneling to expedite construction and ease the manual labor from tunnel workers. Note that since the microtunneling method does not permit manned entry during tunneling operations, Erectors are not used on these projects. Erectors are custom designed and manufactured with our in‐house engineering and manufacturing team to match the tunnel liner installed. Propulsion Cans & Erectors PRINT THIS PAGE TESTIMONIALS Super Excavators, Inc. has enjoyed a long partnership with Akkerman over the years. We originally bought a competitor’s microtunnel system and had nothing but problems with quality and service. Finally we called Akkerman and bought their SL36 microtunnel system. Since then we have never looked back. We have bought several other pieces of equipment from Akkerman. From GBM equipment to ABIS to several microtunnel cutting heads. They have been great working with our staff to customize the equipment for our specific needs. We have put their equipment to the test on several projects by pushing the envelope in long drive distances and very difficult ground conditions. The equipment has responded well and together we have made modifications to continue to improve on efficiency. In our business it is necessary to have people their when you need them. Akkerman has done a great job at supplying quality equipment and servicing our needs in a timely matter, helping keep our work on schedule. SEE WHAT OUR CLIENTS SAY + 1 (800) 533.0386 58256 266th Street Brownsdale, MN 55918 CAREERS JOIN OUR NEWSLETTER