| Button Bit Designs | |
| Skirt Designs | Straight skirt |
| Retrac skirt | |
| Face Designs | Flat Face |
| Drop Center Face | |
| Dome Face | |
| SIZE OF BUTTONS | ||
| Hard Rock | Medium Rock | Soft Rock |
| Larger Ø | Smaller Ø | Smaller Ø |
| Thread form | Thread type |
| Rope thread | R25 |
| R28 | |
| R32 | |
| R35 | |
| R38 |
| Thread form | Thread type |
| T thread | T38 |
| T45 | |
| T51 | |
| ST thread | ST58 |
| ST68 | |
| GT thread | GT60 |
Spherical
Spherical Carbides for use in medium to hard rock, with fractured or seamy applications.
Paraboloid
Semi-ballistic shaped, more aggressive than the Spherical Carbides, for soft to medium consistent rock.
Ballistic
Bullet shaped, very aggressive fast penetration in soft to medium consistent rock.
Note: Generally, the larger the number of gauge buttons the better overall performance, especially in hard rock.
All bit diameters are larger than the given dimensions in the catalog.
Cross bits: Can be a maximum of +1 mm due to manufacturing tolerance.
Button bits: Some bit designs can be a maximum +3 mm to compensate for fast diameter wear.
The minimum diameter for all button bits is +1.5 mm above the given dimensions.
Drill bit always drills a bigger hole than the stated bit diameter.
Taper drill bits 7/8 - 6˚/7˚/11˚/12˚
Taper 7/8 – 6˚/7˚/11˚/12˚ (Recommended bit diameter Dia.30~Dia.42)
Drill bits R25 (1") SERIES
R25 (1″) SERIES (Recommended bit diameter Dia.33~Dia.45)
Drill bits R28 (1 1/8") SERIES
R28 (1 1/8″) SERIES (Recommended bit diameter Dia.37~Dia.45)
Drill bits R32 (1 1/4") SERIES
R32 (1 1/4″) SERIES (Recommended bit diameter Dia.41~Dia.64)
Drill bits R35 (1 3/8") SERIES
R35 (1 3/8″) SERIES (Recommended bit diameter Dia.48~Dia.64)
Drill bits T38 (1 1/2") SERIES
T38 (1 1/2″) SERIES (Recommended bit diameter Dia.64~Dia.102)
Drill bits T45 (1 3/4") SERIES
T45 (1 3/4″) SERIES (Recommended bit diameter Dia.70~Dia.115)
Drill bits T51 (2") SERIES
T51 (2″) SERIES (Recommended bit diameter Dia.89~Dia.127)
Drill bits GT60 SERIES
GT60 SERIES (Recommended bit diameter Dia.92~Dia.152)
