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Systems and Equipment - 126
JT1220 Mach 1 Operator’s Manual
Downhole Tools
CMW
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. Also see our interactive Downhole Tool
Selector at www.ditchwitch.com.
•
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
4
4
4
4
3
1
1
Compaction
Cone
1
2
3
4
4
4
4
HC Hard
Condition
4
3
2
1
1
4
4
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.
Содержание JT1220 Mach 1
Страница 1: ...JT1220 Mach 1 Issue 2 1 Operator s Manual 054 114 CMW...
Страница 19: ...Safety 18 JT1220 Mach 1 Operator s Manual Emergency Procedures CMW...
Страница 75: ...Prepare 74 JT1220 Mach 1 Operator s Manual Check Supplies and Prepare Equipment CMW...
Страница 107: ...Conduct a Bore 106 JT1220 Mach 1 Operator s Manual Remove Pullback Device CMW...