We supply major US brands such as Smith, Security, Hughes and more.
Our ‘Surplus’ bits are new, never before used, and offered at very competitive prices.

There are primarily four (4) types of tri-cone drilling bits.

1.) STANDARD OPEN BEARING ROLLER BIT: On these bits the cones spin freely.
2.) STANDARD OPEN BEARING ROLLER BIT FOR AIR DRILLING: Cones are similar to #1, but have air injection directly to the cones to cool the bearings (not for mud or fluid applications).
3.) SEALED BEARING ROLLERS BITS: These bits have an O-Ring seal with a grease reservoir for bearing cooling.
4.) JOURNAL BEARING ROLLER BITS: These bits are strictly oil/grease cooled with nose bearings, O-Ring seal and a race for maximum performance.

IADC CODE

The IADC bit classification system in which the first three digits classify the bit according to the formation it is designed to drill and the bearing/seal system used.

FIRST DIGIT: 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 the softest and 8 the hardest.
SECOND DIGIT: 1,2,3 and 4 are a further breakdown of formation with 1 the softest and 4 the hardest.
THIRD DIGIT: this digit will be a 1 thru 7 classifying the bit according to bearing/seal type and special gauge wear protection as follows:

1.) Standard open bearing roller bit
2.) Standard open bearing roller bit for air drilling only
3.) Standard open bearing roller bit with gauge protection which is defined as carbide inserts in the heel of the cone
4.) roller sealed bearing bit
5.) Roller sealed bearing bit with carbide inserts in the heel of the cone
6.) Journal sealed bearing bit
7.) Journal sealed bearing bit with carbide inserts in the heel of the cone