Backreamers
Expandable with removable Expansion Rings
6” Backreamer Core expandable to 12”
8” Backreamer Core expandable to 30”
Built-in 30,000 pound capacity swivel with ball thrust bearings and metal-to-metal Caterpillar type seals
for long maintenance-free life.
Fluid flow adjustable both forward and rear.
Heat treated tool steel body.
Solid tungsten carbide cutting edges.
Part Number Core Diameter (Inches) Threads D302 6.0" 2 API I.F. Box D168 8.0" 2-3/8 API Reg Box D222 8.0" 3-1/2 API Reg Box
Part Number Expandable Ring Diameter (Inches) D299 Expands 6" Core to 8" Diameter D300 Expands 6" Core to 10" Diameter D301 Expands 6" Core to 12" Diameter D180 Expands 8" Core to 10" Diameter D181 Expands 8" Core to 12" Diameter D182 Expands 8" Core to 14" Diameter D183 Expands 8" Core to 16" Diameter D184 Expands 8" Core to 18" Diameter Go to 6" Backreamer Assembly Instructions Go to 8" Backreamer Assembly Instructions
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Copyright © 1999 Geological Boring L.L.C. All rights reserved.
Revised: April 8, 1999.