|Nw/ Gw (Kg):||330/ 350||Material:||Cast Iron, Alloy Steel|
|Diameter:||300mm - 900mm||Wob Kn/mm:||0.40~1.05|
|Bearing Type:||Metal Sealed Sliding Bearing||RPM R/ Min:||110~40|
300mm Hdd Hole Opener,
Hdd Hole Opener Bit,
Back Reaming Drilling Reamer
300mm Horizontal Directional Drilling Soil Drill Hole Opener
HDD hole opener for horizontal drilling
Horizontal reamer, also known as HDDD reamer, is used to expand the pilot hole of horizontal directional drilling (HDDD) - HDDD is used when grooves and excavations are not practical. This drilling technique allows drilling underground in a manipulable trenchless manner.
|Material||Cast Iron, Alloy Steel|
|Nw/ Gw (Kg)||330/ 350|
|Bearing Type||Metal Sealed Sliding Bearing|
|RPM r/ min||110~40|
|Bearing Type||Journal Bearing|
|Connected Thread||6 5/8′′reg|
There are three stages
1. The first stage is to drill a small diameter pilot hole.
2. The second stage is enlarge the hole with a larger diameter cutting tool called an HDD Reamer,
3. The third stage is inserting the casing pipe or other product into the enlarged hole.