Products > Equipment: Construction, Civil engineering, Mining... > Microtunneling boring machine > The Robbins Company

Microtunneling boring machine (MTBM)
ø 48 - 78 in (1.2 - 2.08 m) | SBU-M The Robbins Company

The SBU-M is a motorized, manned-entry rock boring attachment meant to bore in a variety of rock types with Unconfined Compressive Strengths (UCS) of 4,000 psi to over 25,000 psi (25 to over 175 MPa). It is made for use with any Auger Boring Machine from 48″ to 78″ (1.2 to 2.08 m) or any standard pipe jacking unit.

The SBU-M is made for longer bores, and maintains line and grade for the length of the bore. The SBU-M is similar to the Robbins Small Boring Unit (SBU). If you are not familiar with the SBU, please familiarize yourself with that machine by visiting the Robbins Small Boring Unit page.