| | | | 
| Insert Type | Matching the insert to the job requirements is essential in achieving the desired results. Each of the following buttons is ideal for different ground conditions, abrasion levels, PSIs and penetration levels. In general, the larger the number of gauge buttons the better overall performance, especially in hard rock.
Number of Buttons
33 mm - 45 mm - 3 - 6 buttons
45 mm - 51 mm - 4 - 6 buttons
51+ mm - 6 - 10 buttons
| Hard Rock - Larger Ø
Medium Rock - Smaller Ø
Soft Rock - Smaller Ø |
| | Hemispherical | Ballistic Button | Parabolic Button (semi-ballistic) | Conical Button | | | | | |
 | Hemispherical
Height 0.5 Ø
Application Strength - multipurpose
Best suited to hard ground
25,000 to 45,000 PSI (170 to 300 MPa) | | | | | |  |
Ballistic Button
Height 0.75 Ø
Application Strength - fast penetration
Best suited to soft ground
10,000 to 20,000 PSI (70 to 140 MPa)
Non-abrasive ground
| | | | | |
|
Parabolic Button (semi-ballistic)
Height 0.6 Ø
Application Strength - fast penetration
Best suited to medium ground
15,000 to 25,000 PSI (100 to 170 MPa)
Mildly abrasive ground
| | | | | |  |
Conical Button
Height 0.65 Ø
Application Strength - fast penetration
Suited for all non-abrasive ground types
Smaller contact area
Best suited for smaller diameter bits
| | | | | |
| |
