Diamond Coring Bits & Products Over the years, Boart Longyear™ has introduced some of the most advanced coring bit technology on the market. Our diamond products were originally developed in the 1930's, which led to the commercial development of practical and reliable diamond coring bits manufacturing. From our conventional surface set bits to the revolutionary Stage™ diamond impregnated bit, we continue to set the standard in diamond coring technology. To select the right bit for the job, assess the speed and power of your drill for the size and depths of the holes to be drilled and assess ground conditions such as rock type/formation and down-hole conditions.
Click to view the Boart Longyear Diamond Coring Bit Selector Guide
Custom Bit Info
Experience has proven that some ground conditions require custom bits. Boart Longyear engineers are available to help quickly solve site-specific problems which would otherwise cost time and money. Common design modifications include thread type, OD size, crown profiles for surface set bits, and other custom solutions for special rock conditions.
Click to View Drilling Bit Usage Guidelines and Troubleshooting guide
 | UltramatrixTM (UMXTM)
An innovative and versatile new line of diamond coring bits using patent-pending technology. With several technologically advanced features, the bits make diamond coring more efficient than ever before. | 
| GTUMXTM Diamond Bits
The GTUMX Diamond Bit is designed for shallow holes and conventional drilling, and to be used in exploration and geo technical applications. | | | | | 
| Surface Set Bits
Surface set bits are typically used in softer formations. Traditionally, they utilize a single layer of natural diamonds set in a hard matrix and can be manufactured in many crown profiles. | 
| TSD Bits
The TSD bit is used for fast penetration in soft/medium rock formations. TSDs are a cost effective alternative for large stone surface set bits. | | | | | 
| PCD Bits
PCD bits are made for cutting softer formations
at high penetration rates. They typically have round PCD cutters that can be replaced, extending the life of the bit. | 
| Carbide Chip Bits
The carbide chip bit is a general purpose bit for geo-technical applications used primarily in soft formations. This is a cost-effective alternative to carbide tooth bits. | | | | | 
| Directional and Wedging Bits
Directional bits are used with down hole motors to steer the drill string in different directions. Wedging bits are made to follow wedges set in the bore hole with the intention of altering the hole direction. | 
| Casing Shoes
Boart LongyearTM casing shoes are heavy-duty products that can match up to the toughest formations and hold in very abrasive, fractured formations. | | | | | 
| Reaming Shells
Boart LongyearTM reamers feature increased stability and reduced vibrations due to the specially designed spiral pads and a number
of other key benefits. |  | Impreg Diamond Bits
The impregnated diamond bit is used for cutting holes in medium to ultra-hard formations, and a full array of design variations is available to maximize drill life and penetration. |
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