Polski (Polish)

Drill bits

We offer the highest quality drill bits classified by IADC code



Bit type
(Milled tooth or Insert and formation)

1, 2, and 3 designate STEEL TOOTH BITS with 1 for soft, 2 for medium and 3 for hard formations.
4, 5, 6, 7 and 8 designate TUNGSTEN CARBIDE INSERT BITS for varying formation hardness with 4 being the softest and 8 the hardest.


Formation sub-category

1, 2, 3 and 4 are further breakdown of formation with 1 being the softest and 4 the hardest.


This digit will classify the bit according to bearing/seal type and special guage wear protection

1. Standard open bearing roller bit
2. Standard open bearing roller bit, air-cooled
3. Standard open bearing roller bit with gauge protection which is defined as carbide inserts in the heel of the cone
4. Sealed roller bearing bit
5. Sealed roller bearing bit with gauge protection
6. Journal sealed bearing bit
7. Journal sealed bearing bit with gauge protection


The following letter codes are used in the fourth digit position to indicate additional features

A. Air Application
R. Reinforced Welds
C. Center Jet
S. Standard Steel Tooth
D. Deviation Control
X. Chisel Insert
E. Extended Jet
Y. Conical Insert
G. Extra Gage Protection
Z. Other Insert Shape
J. Jet Deflection

2 swidry P1020304


1 swidry P1020042