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Weld the holder onto the core barrel, then fix the roller to the holder through bolt. This is replaceable design is good for a quick replaceable without position and welding the roller every time.
Parameters:
The cone covered with 52 pieces large inserts leave no blind spot on the drilling. You can expect much better penetration speed and workling life.
MH-3R is with holder design for a quick replacment. Welding the holder once, then using the bolt to connect the roller.
additional to the traditional sealing, we apply another CNC surface as additional sealing to prevent the dust into the bearing
All the roller bearings covered by the hard alloy to apply extra hardness
Pull the air out of the body, then push the high end grease in, make sure the roller has enough grease for the whole life span
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