A new tapered bearing assembly, developed specifically for roller-cone rock bits, significantly increased bit life for a Middle Eastern operator. This technology can help oil and gas customers avert ...

When a tapered bearing is subject to a load, a force develops between the roller and the cone back-face rib because the load tries to squeeze the rollers out of the bearing. Most of the load is ...

Drill bit manufacturers have substantially improved polycrystalline diamond (PCD) cutters and drag bit designs since their introduction in 1972. PCD drill bits are now approaching the rolling cone ...