For applications where line and grade are critical and tunnel diameter is greater than 48″, a Barbco Boring Machine Tunnel Attachment (BMTA), is the equipment of choice. The BMTA has a cutting head that is individually powered, separate from the power supply of the boring machine itself. Electric over hydraulic controls provide maximum control ability of line and grade.
The boring machine provides BMTA’s range in size from 42″ to 96″ and are suited for soft ground to hard rock steel case bores.
All BMTA’s are equipped with a quick disconnect ring for easy detachment from the casing when the bore is complete.