IADC: 622 is TCI standard open air-cooled bearing roller bit  for medium hard formations with high compressive strength. Advantages 1. Insert shapes and grades designed to provide long life and high productivity 2. Longer service life for decreased machine downtime 3. Air-cooled bearing performance optimized for high hours by advanced metallurgy, proportioning of components, and optimized geometries.  Far Eastern factory have 15 years and more than 30 countries services experience to supply the drill bits and advanced drilling soulutions for many different applications. The application including coal mine drilling,copper mining,iron ore,gold ore and so on.The various drill bits can be customized as per different rock formation becasue we have our own API & ISO certified factory of drill bits. We can give our engineer's solution  when you can supply specific conditions, such as hardness of rocks,types of drilling rig,rotary speed,weight on bit and torque.

Basical Specification
IADC Code	IADC622
Size of Rock Bit	9 inches
	229mm
Thread Connection	4 1/2” API REG PIN
Product Weight:	50Kgs
Bearing Type:	Roller-Ball-Roller-Thrust Button/Open Bearing
Circulation Type	Jet Air
Operating Parameters
Weight on Bit:	27,000-54,000Lbs
Rotary Speed:	100-60RPM
Air Back Pressure:	0.2-0.4 MPa
Ground Description:	Hard, well-compacted rocks such as: hard silica limestone, quarzite streaks, pyrite ores, hematite ores, magnetite ores, chromium ores, phosphorite ores, and granite.