Welcome to Kings Rock Tools - Home of the Rock Drilling Tools!
Technical Support
According to formation hardness and customer requirements, we recommend appropriate drill bits and teeth arrangement. With timely consultation, the drilling cost shall decrease efficiently.
Bit face design
Face |
Application |
Button bit ,short skirt |
For H22 drill rod |
Button bit,long skirt |
For H22 drill rod |
Retrac button bit,long skirt |
Provide easy removal and completion of bit in adverse hole conditions |
Retrac button bit,long skirt |
Provide easy removal and completion of bit in adverse hole conditions |
Flat face ,button bit |
General purpose bit ,appropriate for medium to hard rock |
Drop center |
Straight hole application , appropriate for medium to hard rock |
Half Drop Center |
Straight hole application , appropriate for medium to hard rock |
Button bit insert types
Hemispherical Button |
|
![]() |
·Application Strength -universal button |
·Best suited to hard ground |
|
·25,000 to 45,000 PSI (170 to 300 MPa) |
|
·Abrasive to very abrasive |
|
Parabolic Button (semi ballistic) |
|
![]() |
·Application Strength - fast penetration |
·Best suited to medium ground |
|
·15,000 to 25,000 PSI (100 to 170 MPa) |
|
·Mildly abrasive ground |
|
Conical Button |
|
![]() |
·Application Strength-fast penetration |
·Suited for all non-abrasive ground types |
|
·Smaller contact area |
|
·Best suited for smaller diameter bits |
|
Ballistic Button |
|
![]() |
·Application Strength-fast penetration |
·Best suited to soft ground |
|
·10,000 to 20,000 PSI(70 to 140 MPa) |
|
·Non abrasive ground |