Polski (Polish)

Drill bits

We offer the highest quality drill bits classified by IADC code

DIGIT REFERENCE

FIRST

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.

SECOND

Formation sub-category

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

THIRD

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

FOURTH

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

swider

1 swidry P1020042