1. Tooth palm bearing surface surfacing layer of hardalloy, cone bearing with reduced after welding together gold for silver, improve the bearing capacity and resistance to bite ability;
2, bearing type O sealing ring is wear-resistant, hightemperature resistant high saturation NBR, increase the sealing ring sectionreduces the pressure seal, carefully designed sealing convex platform outsidethe improved seal reliability.
3, USES the steel ball or card lock reed cone way, cardlock can endure high reed drilling pressure, steel ball to lock the can adaptto high speed.
4 the differential pressure and prevent drilling fluidrestrictions in the lubricating system all rubber oil storage sac, for bearingsystem provides good lubrication guarantee.
5, 250 degree temperature the high temperature, abrasionresistance of new grease.