Description
SHADOW™ BIT FEATURES
Our patented process of coating diamond bits while in the furnace creates a chemical bond between our diamonds and matrix.
The bond acts stronger than the diamond itself and provides higher diamond projection (up to 80% compared to 40% for mechanical bonding) for improved flushing, higher penetration rates, and longer bit life.
LONGYEAR™ SHADOW™ MATRIX
Boart Longyear successfully created a chemical bond between large diamonds and our established Longyear matrix, which creates a stronger-than-diamond bond.
DESIGN AVAILABILITY
TAPERED WATERWAY (TW)
| Part Number | Size | Matrix |
Crown Height (mm) |
Waterway | Gauge |
Oversize OD |
Options |
|---|---|---|---|---|---|---|---|
| 4057043 | NQ | Shadow | 16 | TW | -R | – | – |
| 4057014 | NQTT | Shadow | 20 | TW | -R | – | FD |
| 4057025 | HQ3 | Shadow | 16 | TW | -R | – | FD |
| 4057028 | HQ3 | Shadow | 16 | TW | OS | 3.830 | – |
| 4057013 | HQTT | Shadow | 16 | TW | -R | – | FD |
TAPERED SWIRL WATERWAY (TSW)
| Part Number | Size | Matrix |
Crown Height (mm) |
Waterway | Gauge |
Oversize OD |
Options |
|---|---|---|---|---|---|---|---|
| 4057036 | BQ | Shadow | 20 | TSW | -R | – | – |
| 4057037 | NQ | Shadow | 20 | TSW | -R | – | – |
| 4057102 | NQ | Shadow | 20 | TSW | -R | – | PINS |
| 4056907 | NQTK | Shadow | 20 | TSW | -R | – | – |
| 4057015 | NQTK | Shadow | 20 | TSW | OS | 3.032 | – |
| 4057086 | NQ3 | Shadow | 20 | TSW | -R | – | – |
| 4057064 | HQ | Shadow | 20 | TSW | -R | – | – |
| 4057103 | HQ | Shadow | 20 | TSW | -R | – | PINS |
| 4057121 | HQ | Shadow | 20 | TSW | OS | 3.895 | – |
| 4057083 | HQ3 | Shadow | 20 | TSW | -R | – | – |
STANDARD & DEEP ID (DD)
| Part Number | Size | Matrix | Crown Height
(mm) |
Waterway | Gauge | Oversize
OD |
Options |
|---|---|---|---|---|---|---|---|
| 4057003 | HQ | Shadow | 16 | Standard | -R | – | – |
| 4057002 | HQ3 | Shadow | 16 | Standard | -R | – | DD |
| 4057066 | PQTT | Shadow | 16 | Standard | -R | – | DD |
DOWN-HOLE-MOTOR / BUTTERFLY (BTFLY)
| Part Number | Size | Matrix | Crown Height
(mm) |
Waterway | Gauge | Oversize
OD |
Options |
|---|---|---|---|---|---|---|---|
| 4057058 | N | Shadow | 16 | BTFLY | R | – | – |
| 4057059 | H | Shadow | 31 | BTFLY | S | – | – |