7° Tapered Drill Bits

7° Tapered Drill Bit is a kind of drill bit that is used in conjunction with the down-the-hole impactor. It has the characteristics of straight drilling, fast drilling and deep hole drilling. And it is widely used in mining, quarry, hydropower engineering, and drilling water wells.
Category:
 Carbide Button Choose Guide
ProductSpherical ButtonBallistic ButtonOgive Button
Applicable typesRegular typeRetrac typeRegular typeRetrac typeEspecially suitable for pneumatic rock driller
Hard Rock★★★★
Medium Hard Rock★★★★
Soft Rock★
Abrasive Rock★★★★
Non-Abrasive Rock★★
Homogeneous Rock★★★
Fissure Rock★

Remarks:Other specification bits are available according to customer’s requirements.

 Physical Performance
ItemsMeasured Data
GF20BGF20G
D(g/cm3)14.9414.97
HC(Oe)143140
σs9.18.8
Ms/%9592
TRS(MPa)33003362
POROSITYA02B00C00A02B00C00
ETA PhaseNoneNone
Grain size(μm)2.53
MAX2014
Structure PatchesNoneNone
KICNoneNone
HRA90.390.4
HV3014401440

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