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.
W70 Hammer
Download the Data sheet as PDF-file:
Basic information - W70 (3")
| Hole size | Ø 82 / 89 mm (3.2 / 3.5") |
| Water consumption |
80 - 270 l/min (20 - 70 USgpm) |
| Max operating pressure |
180 bar (2 610 psi) |
Technical specification
W70 Hammer
| Length A |
1 171 mm (46") |
| Length B |
1 098 mm (43") |
| Diameter C |
Ø 78 / 85 mm (3.1 / 3.3") |
| Size D |
60 mm (2.4") |
| Weight |
23 kg (50.7 lbs) |
| Bit diameter |
Ø 82 / 89 mm (3.2 / 3.5") |
| Operating pressure interval |
60 - 180 bar (870 - 2 610 psi) |
| Water consumption interval |
80 - 270 l/min (35 - 70 USgpm) new to worn |
| Frequency at maximum operating pressure |
70 Hz (4 200 blows/min) |
| Feed force, formation dependant |
7 000 - 10 000 N (1 575 - 2 250 lbf) |
| Rotation speed, formation dependant |
80 - 120 rpm |
| Rotation torque, formation dependant |
800 - 1 500 Nm (590 - 1 100 lbf-ft) |
| Drill rod |
Wassara Drill rod Ø 63.5 mm (2.5"), Thread WT70 |
| Recommended water pump |
WASP100D / WASP100E VSD, 360 l/min (95 USgpm) @ 200 bar (2 900 psi) |
| Bit shank |
W-Bit 70 |
W70 Hammer sizes
| Hammer diameter | Part no. |
| Ø 78 mm | 1002810-78 |
| Ø 85 mm | 1002810-85 |
W70 Parts list
| Pos | Detail | Spare part kit | Part no. |
| 1 | Drill bit Ø 82 mm Convex SB Drill bit Ø 89 mm Speed SB |
3000196 |
|
| 2 | Chuck | 1500004 | |
| 3 | Bit retainer | 1002876 | |
| 4 | Seal kit | 1, 2 | 1002081 |
| 5 | Hammer case Ø 78 mm Hammer case Ø 85 mm |
1500203-78 |
|
| 6 | Piston bushing | 1, 2 | 1001647 |
| 7 | Inner tube | 1000225 | |
| 8 | Piston | 1, 2 | 1000215 |
| 9 | House retainer | 2 | 1500974 |
| 10 | Sliding case | 2 | 1001645 |
| 11 | Valve house | 2 | 1001620 |
| 12 | Valve | 2 | 1001563 |
| 13 | Sleeve | 1001410 | |
| 14 | Lid | 2 | 1001274 |
| 15 | Filter | 1, 2 | 1001138 |
| 16 | Filter support | 1000227 | |
| 17 | Backhead WT70 Pin | 1001439 | |
| Spare part kit 1 | 1002272 | ||
| Spare part kit 2 | 1002763 |