pdc cutter
1) Sealed rolling bearing, cylindrical roller cone body placed in the groove, increasing the journal size
2)Vice thrust bearing surface, respectively, and hardened antifriction treatment
3)Ball locking cone, adapted to high speed
4 )The use of 250 degree heat resistant, anti-wear grease new
5 )GA series bit for the O-ring rubber seal bearing bits for drilling in low-speed drill, which is the ideal tool for the economic
Bit size(in) | Specification | ||
Nozzle(PC) | Gage length(mm) | API Connection(in) | |
7-7/8 | 5 | 50 | 4-1/2 |
8-1/2 | 5 | 60 | 4-1/2 |
12-1/4 | 7 | 90 | 6-5/8 |
