The Wassara technology uses water to power the DTH hammer. This makes it the ideal choice for drilling in sensitive areas as well as for drilling long straight holes. The water-powered hammer is capable of penetrating almost any formation while maintaining speed and accuracy.
W120 Hammer
Download the Data sheet as PDF-file:
Basic information - W120 (5")
| Hole size | Ø 130 / 140 / 152 mm (5 / 5.5 / 6.0") |
| Water consumption |
175 - 445 l/min (45 - 118 USgpm) |
| Max operating pressure |
180 bar (2 610 psi) |
Technical specification
W120 Hammer
| Length A |
1 590 mm (62.6") |
|
Length B |
1 495 mm (59") |
|
Diameter C |
Ø 126 mm (5") |
|
Size D |
90 mm (3.5") |
|
Weight |
99 kg (218 lbs) |
|
Bit diameter |
Ø 130 / 140 / 152 mm (5 / 5.5 / 6.0") |
|
Operating pressure interval |
60 - 180 bar (870 - 2 610 psi) |
|
Water consumption interval |
175 - 445 l/min (45 - 118 USgpm) new to worn |
|
Frequency at maximum operating pressure |
54 Hz (3 240 blows/min) |
|
Feed force, formation dependant |
12 000 - 24 000 N (2 700 - 5 400 lbf) |
|
Rotation speed, formation dependant |
45 - 75 rpm |
|
Rotation torque, formation dependant |
1 500 - 3 000 Nm (1 100 - 2 210 lbf-ft) |
|
Drill rod |
Wassara Drill rod Ø 102 mm (4"), Thread API 3½" Reg |
|
Recommended water pump |
WASP200D / WASP200E VSD, 610 l/min (160 USgpm) @ 200 bar (2 900 psi) |
|
Bit shank |
Wassara 350 |
W120 Hammer sizes
| Hammer diameter | Part no. |
| Ø 126 mm | 1001070-126 |
| Ø 136 mm | 1001070-136 |
Other dimensions available on request. Please contact your local distributor for further information. See under ‘Contct us’.
W120 Parts list
| Pos | Detail | Spare part kit | Part no. |
| 1 | Drill bit Ø 130 mm, Convex SB Drill bit Ø 140 mm, Convex SB Drill bit Ø 152 mm, Convex SB |
3000013 |
|
| 2 | Chuck | 1000547 | |
| 3 | Bit retainer | 1002880 | |
| 4 | Seal kit | 1, 2 | 1002079 |
| 5 | Guide sleeve |
1000549 |
|
| 6 | Hammer case Ø 126 mm Hammer case Ø 136 mm Hammer case Ø 148 mm |
1001057-126 |
|
| 7 | Piston bushing | 1, 2 | 1001059 |
| 8 | Inner tube | 1001061 | |
| 9 | Piston | 1, 2 | 1001060 |
|
10 |
Sliding case | 1001063 | |
| 11 | Valve house | 2 | 1001062 |
| 12 | Valve | 2 | 1001064 |
| 13 | Sleeve | 1001065 | |
| 14 | Guided Lid | 1001066 | |
| 15 | Filter | 1, 2 | 1001130 |
| 16 | Filter support | 1001068 | |
| 17 | Backhead API 3½" Reg pin | 1001067 | |
| Spare part kit 1 | 1002221 | ||
| Spare part kit 2 | 1002222 |