Terex Stand-Alone Core Barrel Eliminates Need for Auger Drill | Construciton News


Terex Utilities announces a new auger tool for digger derricks. The Terex Stand Alone Core Barrel fits directly onto a standard Kelly bar and can be stowed like a standard auger on the boom. The design eliminates the need for any attachments or to remove the core barrel for transportation.

When a flighted auger will no longer do the job, the new Terex Stand Alone Core Barrel can increase productivity when drilling hard rock, such as limestone.

For applications requiring drilling to begin at ground level, a removable pilot bit can be used to stabilize the Stand Alone Core Barrel to start a hole. Once initial penetration is achieved, the pilot bit can be removed. The optional pilot bit is important for achieving a straight starter track.

In addition, the Stand Alone Core Barrel permits easy plug removal, increasing drilling productivity. A unique tooth pattern allows the rock plug to easily fall out of the barrel when the operator ratchets the rotation of the tool. Other core barrels require workers to hammer the core out.

“Terex is the only digger derrick manufacturer that also manufactures tooling. We understand how to design auger tools for maximum productivity and efficiency for the entire application. The new Stand Alone Core Barrel is an example of applying a new concept to barrel tools for better job site performance,” said Dale Putman, auger tooling product support manager.

The Stand Alone Core Barrel is available in diameters from 18 to 30 in. and features a 5/8”-thick wall. The heavy-duty hex hub is either 2-1/2” or 2-5/8” and comes with a Dom ST5 2-3/4” shaft. The overall length of the tool is 104 in. The C-10 bullet teeth are easy to remove and replace.

Terex Utilities completed field testing of the Stand Alone Core Barrel in June 2016 with Big Sandy RECC of eastern Kentucky. “We occasionally will have rock holes that our standard augers will not cut,” said Kirby Castle, line superintendent. “The Terex Stand Alone Core Barrel cut through the rock in a matter of minutes. We like the fact that the auger will cut through the rock that we encounter and that it will save us some time on the jobsite.”