Rock Products - The Leading Voice of the Aggregate Industries.

Brunner & Lay Extends Thread Life


Brunner & Lay offers the Dual Drive Bolter Steel. According to the company, the revolutionary design of the Dual Drive Bolter Steel isolates the threads from bending forces created by bit deflection while drilling, greatly reducing the stress on threads.

Forces are transmitted more effectively to the face of the bit through the skirt and body of the bit, therefore reducing exposure of the threads to potentially damaging percussive forces.

Dual Drive Bolter Steel is beneficial when drilling in heavily folded sedimentary rock with clay/mud seams and fissures.

The company said its unique design protects the threaded connection from exposure to debris while exiting the hole. This extends thread life plus reduces mat snags when bolting. Customers have reported a 20-50 percent longer steel life compared to other products in the market when using the new Brunner & Lay Dual-Drive system, according to the company.

Brunner & Lay, www.brunnerlay.com