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Medium-Hard 6xx Tricone Bit

TRICONE DRILL BIT · MEDIUM-HARD FORMATION · IADC 6xx · 14 models · Φ171–311mm

Medium-Hard 6xx Full specification

14 models, sorted by diameter (small to large)

Model	Diameter	IADC	Weight on bit	Rotary speed	Air pressure	Top Sub	Weight kg	Details
6 3/4″ MR632	Φ171	632	20,250–40,500 lbs	60–100 rpm	0.2–0.4 MPa	3 1/2″ API	21	View Details →
7 7/8″ MR635	Φ200	635	23,630–47,250 lbs	60–100 rpm	0.2–0.4 MPa	4 1/2″ API	34	View Details →
8 1/2″ MR635	Φ216	635	25,500–51,000 lbs	60–100 rpm	0.2–0.4 MPa	4 1/2″ API	38	View Details →
9″ MR622	Φ229	622	27,000–54,000 lbs	60–100 rpm	0.2–0.4 MPa	4 1/2″ API	50	View Details →
9″ MR635	Φ229	635	27,000–54,000 lbs	60–100 rpm	0.2–0.4 MPa	4 1/2″ API	50	View Details →
9 5/8″ MR635	Φ244.5	635	28,875–57,750 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	60	View Details →
9 7/8″ MR635	Φ251	635	29,630–59,250 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	65	View Details →
9 7/8″ MR645	Φ251	645	29,625–59,250 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	65	View Details →
10 1/8″ MR635	Φ258	635	30,563–61,125 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	67	View Details →
10 5/8″ MR615	Φ270	615	31,880–53,130 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	74	View Details →
10 5/8″ MR645	Φ270	645	31,880–63,750 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	74	View Details →
11″ MR645	Φ279	645	33,000–66,000 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	74	View Details →
12 1/4″ MR632	Φ311	632	36,750–73,500 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	98	View Details →
12 1/4″ MR635	Φ311	635	36,750–73,500 lbs	60–100 rpm	0.2–0.4 MPa	6 5/8″ API	98	View Details →

Where this series is used

For medium-hard formations with moderate abrasiveness: limestone, sandstone, dolomite and chert.

Tricone bits are classified by IADC code: the first digit (4–8) indicates formation hardness from soft to extremely hard, the last two describe cutting structure and bearing design. Several IADC options are available in each size; selection depends on rock type, abrasiveness and rig parameters.