Contractor Uses Live Swivel Head for Precision Bore Job

API Contracting/Cornerstone Boring used a Michael Byrne 42” live swivel cutting head for a very tight and low ground cover auger bore in Paducah, KY.   The bore crossed a highway and on-ramp with portions of the on ramp having only 2 feet of cover.  It was completed using the Akkerman 240 Guided Bore Machine to pilot the initial bore path. That pilot was followed with a conventional auger bore machine and the Michael Byrne 42” live swivel cutting head

The 42” swivel head uses a threaded coupling that is attached to the pilot bore tubes. The needle of the cutting head is inserted into the adapter coupling and seated against the face of the cutting head 3” male hex.  The boring machine proceeds to bore in a typical auger bore method.  The swivel cutting head pushes the pilot tubes out of the exit pit as the cutting head follows the path of the pilot tubes opening the bore to the desired 42” diameter.  The cutting head is made with thrust bearings and can handle thrust and radial loading. Care must be used with this method of precision boring by letting the cutting teeth bore the hole and do the work. Putting too much thrust pressure on the head could damage the bearings. 

42" Swivel Head in Casing
42″ Swivel Head in Casing

API/ Cornerstone has performed numerous precision auger bores using the live swivel head and the Akkerman guided bore system.  Underground work often runs into unforeseen obstacles, one of which is changing ground conditions. The live swivel lets you pull your cutting head and auger back to check the face of the bore. The tapered front needle of the swivel will let the head re-seat into the coupling attached to the pilot tubes and continue your bore. 

Swivel head aligned with pilot tube

D48-950 performs successful bore through tough conditions in Fort McMurray, Alberta

Total Trenchless of Calgary, AB completed a difficult bore using an MBM D48-950 to install a 30″ drainage culvert under Highway 63 in Fort McMurray, AB. From Brett Stephens, Owner, “We put our new Micahel Byrne Mfg. D48-950 to work this past week! What a powerhouse of a machine! It wasn’t your typical bore pit, the launch pad was built up to install a 30” drainage culvert high on a slope. The Komatsu dozer isn’t your ordinary push block but it served the purpose! The MBM boring machine performed for us in the tough, boney ground under Highway 63, Fort McMurray Alberta. These rigs are built tough!”

Thanks to the Total Trenchless crew for Making Boring Great!

MBM D48-950