Ditch-witch JT922 User Manual Page 112

  • Download
  • Add to my manuals
  • Print
  • Page
    / 159
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 111
JT922 Operator’s Manual Systems and Equipment - 111
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.
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
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.
Page view 111
1 2 ... 107 108 109 110 111 112 113 114 115 116 117 ... 158 159

Comments to this Manuals

No comments