GEOLOGICAL BORING L.L.C.


Backreamers

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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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"When the others can't make the cut!"    newlogo.jpg (26691 bytes)

Copyright 1999 Geological Boring L.L.C.  All rights reserved.
Revised: April 8, 1999.