76-660mmTricone bit HJ 537.617 Tricone bit for granite

Drill bits

I-Tricone bits

1) Type: milled tooth bit and TCI bit

2) Size :3”-26”(76mm-660.4mm)

3) IADC: standard IADC including 111 to 737

4) Bearing sealed: metal sealed(HJ), rubber sealed(HA), not sealed(W)

5) Color: blue, golden or as customers’ requirement. Formation: soft, soft to medium hard, medium hard, hard, very hard

BIT TYPE

IADC CODE

SUITABLE FROMATION

WEIGHT IN BIT (KN/MM)

ROTARY SPEED(R/MIN)

FR117

117

Low compressive strength, very aggressive and very soft formation: soft shale, clay, salina stone

0.3-0.9

300~80

FR127

127

Low compressive strength, very aggressive and very soft formation: shale, clay, soft limestone

0.9-0.9

300~80

FR217

217

Higher compressive strength, medium formation with interlayer: hard shale, sandstone, limestone

0.35-0.9

300~80

FR325

325

Higher compressive strength, medium formation with interlayer: hard shale, sandstone, gyprock

0.35-0.9

290~70

FR437

437

Soft formations with low compressive strength and high drillability, clay, mudstone, salt, soft shale

0.35-0.9

280~60

FR517

517

Soft to medium formations with high compressive strength, such as hard shale, limestone, sandstone

0.35-1.05

240~50

FR537

537

Soft to medium formations with high compressive strength, such as hard shale, limestone, sandstone, dolomite

0.5-1.05

220~40

FR617

617

Medium hard formation with high compressive strength, such as hard shale, limestone, sandstone, dolomite

0.5-1.140

220~40

FR637

637

Hard formation with high compressive strength, such as limestone, sandstone, dolomite, hard gypsum, marble

0.5-1.140

200V40