Page 63 - Diamond Products Catalog
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CARBIDE BITS
Boart LongyearTM carbide bits are designed for drilling in soft to medium rock formations and overburden conditions.
Carbide Chip Devil’s Nightmare
The Devil’s Nightmare is aggressive – the special carbide that is used maximizes its capabilities. With efficient flushing characteristics, it offers high performance in a variety of applications ranging from soils to soft rock formations.
CARBIDE BIT NAMING CONVENTION
Finding the right bit is easy. The naming convention directly corresponds to the description of the bit in the list of part numbers desired.
NQ DN R FD
1 234
1. Size
Bits are available in all standard drilling sizes B, N, H, and P.
2. Bit Type
Devil’s Nightmare (DN)
3. Gauge
Carbide bits are available in three standard OD gauge configurations.
4. Waterway Option
Where applicable, waterway options are identified here.
Q is a trademark of Boart Longyear.
Double angle (DA)
Face discharge (FD)
Standard gauge (S)
Equal to reaming shell gauge (R)
Oversized Outer Diameter (OS Inches)
© Copyright 2014 Boart Longyear. All rights reserved.
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