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Cutter Blade Selection
Saw blades for the O’Brien root cutter are available in 6”, 8”, 10”, 12” and 15” sizes. Saw blades allow
about 1/2” clearance in the pipeline and skid assemblies are designed smaller than the cutter blades
to allow unit to pass through opening cut by the saw blade. The 6” cutter assembly with 6” blade at-
tached is designed for straight or gentle sweeping lines and will not traverse elbows. The following
indicates the size cutter and skid to be used in pipe cleaning applications.
Proper skid and cutter should be attached to root cutter before the high pressure hose is attached to
the unit. Always keep engine off while attaching root cutter assembly to hose or while root cutter is
attached and out of pipe. The rotating cutter blade and high pressure water jet discharge are poten-
tially dangerous and could cause sever injury and/or death.
Fig. 2
Pipe
Size
Skid
Size
Cutter
Size
4"
none
4"
6"
6"
6"
8"
6"
6"
10"
8"
8"
12"
10"
10"
15"
12"
12"
18" to 21"
15"
15"
