Description
Supplied as Milled Tooth Bits or Tungsten Carbide Insert (TCI) bits to suit varying rock formations. Circulation type may be regular fluid, jet or air blast. Refurbished rock bits are also available from time to time and your enquiries are welcome.
| Rock bit size range and connection type | ||||
| Diameter (inches) |
API Reg Pin Connection |
Diameter (inches) |
API Reg Pin Connection |
|
| 2.7/8″ | N rod | 6.3/4 – 6.7/8″ | 3.1/2″ | |
| 2.15/16 – 3″ | N rod | 7.3/8″ | 3.1/2″ | |
| 3.1/8 – 3.1/4″ | N rod | 7.5/8″ | 4.1/2″ | |
| 3.1/2 – 3.5/8″ | 2.3/8″ | 7.7/8 – 8″ | 4.1/2″ | |
| 3.3/4″ | 2.3/8″ | 8.1/2 – 8.5/8″ | 4.1/2″ | |
| 3.7/8 – 4″ | 2.3/8″ | 8.3/4″ | 4.1/2″ | |
| 4.1/4 – 4.3/8″” | 2.3/8″ | 9″ | 4.1/2″ | |
| 4.1/2 – 4.5/8″ | 2.3/8″ | 9.5/8″ | 6.5/8″ | |
| 4.3/4 – 4.7/8″ | 2.7/8″ | 9.7/8″ | 6.5/8″ | |
| 5″ | 2.7/8″ | 10.5/8″ | 6.5/8″ | |
| 5.1/8 – 5.1/4″ | 2.7/8″ | 11″ | 6.5/8″ | |
| 5.1/2″ | 3.1/2″ | 12.1/4″ | 6.5/8″ | |
| 5.5/8 – 5.3/4″ | 3.1/2″ | 13.3/4″ | 6.5/8″ | |
| 5.7/8″ | 3.1/2″ | 14.3/4″ | 6.5/8″ | |
| 6 – 6.1/8″ | 3.1/2″ | 16″ | 6.5/8″ | |
| 6.1/4″ | 3.1/2″ | 17.1/2″ | 6.5/8″ | |