Cost Effective Rock Roller Bits Using Hadifield Steel For Soft To
Very Hard Formations
Click here for catalogueTCI DRILL BIT.pdf
What is Rock Roller Bits?
Rock Roller Bit consists of a bit body with three moveable conical rollers
equipped with cemented carbide inserts. The idea is the crush the
rock by rolling the inserts against the rock with appropriate
rotation speed and feed force. Three types of cemented carbide
inserts are used for roller type bits being Chisel, Conical, and
Hemispherical. Carbide inserts are distributed over the three
rollers in such a manner that the entire bottom of the hole is
worked on when the drill bit is rotated. Roller bits for hard and
abrasive rock generally have spherical cemented carbide inserts
closely spaced.
How to read an IADC Code properlyHow To Read IADC 1.pdf
| First Digit | TOOTH |
| 1 | Steel tooth bits for Soft Formation |
| 2 | Steel tooth bits for Medium Formation |
| 3 | Steel tooth bits for Hard Formation |
| 4 | TUNGSTEN CARBIDE INSERT BITS
For varying formation hardness with 4 being the softest and 8 the
hardest. |
| 5 |
| 6 |
| 7 |
| 8 |
| Second Digit | FORMATION |
| 1 | 1,2,3 and 4 are further breakdown of formation with 1 being the
softest and 4 the hardest. |
| 2 |
| 3 |
| 4 |
| Third Digit | BEARING/SEAL TYPE |
| 1 | Standard open bearing roller bit |
| 2 | Standard open bearing roller bit, air-cooled |
| 3 | Standard open bearing roller bit with gauge protection |
| 4 | Sealed roller bearing bit |
| 5 | Sealed roller bearing bit with gauge protection |
| 6 | Journal sealed bearing bit |
| 7 | Journal sealed bearing bit with gauge protection |
| Fourth Digit | ADDITIONAL FEATURES |
| A | Air application |
| R | Reinforced welds |
| C | Center jet |
| S | Standard steel tooth |
| D | Deviation control |
| X | Chisel insert |
| E | Extended jet |
| Y | Conical Insert |
| G | Extra gage protection |
| Z | Other insert shape |
| J | Jet Deflection |
Application
Tricone drill bit is the best all-purpose drill bit and can be used
for many different types of rock formations, such as Soft Rock
Formations (consist mainly of sand, clay, limestone or shale),
Medium Rock Formations (calcites, dolomites, hard limestones, and
some hard shale), Hard and Abrasive Formation (hard shale,
calcites, mudstones, chert, pyrite, granite, quartzite, and cherty
lime stones).
Main Products We Provide
We mainly provide Tricone Bits(TCI Drill Bits) for open pit mining.
a). Type: Tungsten Carbide Insert (TCI)
b). Formation Application: Soft to Hard Formation
c). Size Available: 7 7/8''~26''
d). Popular IADC Code: IADC545,645,725,735,745,825,835
Don’t see the bit you are looking for? Give us a call, we can
customize any bit to fit your unique circumstances.
The above represents commonly available sizes and types, we do
produce other sizes and types of rock drill bits which do not
appear . Please contact us for more information.
