JT100/JT100 All Terrain Operator’s Manual Systems and Equipment - 165
Downhole Tools
Backreamers
A backreamer enlarges the hole as pipe is pulled back through the bore. No one backreamer works well in
all conditions. These charts are meant as a guideline only. See your local Ditch Witch
®
dealer for soil
conditions and backreamer recommendations for your area.
• 1 = best
• 2 = good
• 3 = fair
• 4 = not recommended
Backreamer Sandy
Soil
Soft Soil Medium
Soil
Hard
Soil
Rocky
Soil
Soft
Rock
Hard
Rock
Beavertail 3 1 1 1 3 4 4
Three Wing 4 3 3 2 1 1 4
Water Wing 4 3 2 1 2 2 4
Compact Fluted 1 1 2 2 2 3 4
Kodiak 4 3 3 2 1 2 4
Rhino Rock 4 4 4 4 3 2 1
Rockmaster
®
44 44311
Compaction
Cone
12 34444
HC Hard
Condition
43 21144
ST Saw Tooth 2 2 1 2 2 3 4
MX Mixer 2 2 3 4 4 4 4
CT Cutter 3 2 1 2 3 4 4
EX Expander 1 2 3 4 4 4 4
Fluted Cone 1 1 2 2 2 3 4
IMPORTANT: For soil definitions, see the chart on the previous page.
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