Advanced power
The HHK A series provides an adjustable stroke of up to 1.2 m (3.9 ft) and up to 20% more efficiency than a traditional free-fall hammer of the same weight. The impact hammer is suitable for driving all types of piles: precast concrete, steel tube, sheet, and timber piles. The design of the hammer frame and drive cap makes for low impact noise and less vibration while piling. All impact energy is concentrated in the centre of the pile. The construction of the hammer makes it possible to use biodegradable hydraulic oils. The hammer is easy to connect to different hydraulic systems and can be operated either by the hydraulic system of the rig or by a separate power pack. Furthermore, it can be mounted on all kinds of leaders or be freely suspended.
Adjustable stroke of up to 1.2 m
Up to 20% more efficiency
Suitable for all types of piles
| Model | HHK3A | HHK5A | HHK7A | HHK9A |
|---|---|---|---|---|
| RAM WEIGHT | 3 000 kg (6 614 lb) | 5 000 kg (11 000 lb) | 7 000 kg (15 400 lb) | 9 000 kg (19 800 lb) |
| MAXIMUM ENERGY | 35 kNm (26 070 ft-lb) | 59 kNm (43 398 ft-lb) | 82 kNm (60 757 ft-lb) | 106 kNm (78 116 lb) |
| DROP HEIGHT MAX | 1 200 mm (3.94 ft) | 1 200 mm (3.94 ft) | 1 200 mm (3.94 ft) | 1 200 mm (3.94 ft) |
| BLOWS PER MINUTE | 40–100 bl/min | 40–100 bl/min | 40–100 bl/min | 40–100 bl/min |
| PRESSURE | 106 bar (1 537 psi) | 176 bar (2 552 psi) | 183 bar (2 654 psi) | 235 bar (3 408 psi) |
| OIL FLOW (NOMINAL/MAX) | 231/304 l/min (61/80 gpm) | 231/304 l/min (61/80 gpm) | 293/398 l/min (77/105 gpm) | 293/398 l/min (77/105 gpm) |
| MAX DRIVE CAPS | 470 x 470 mm / ⌀ 770 mm 18 x 18 in / ⌀ 30 in |
470 x 470 mm / ⌀ 770 mm 18 x 18 in / ⌀ 30 in |
550 x 550 mm Ø 850 mm 21 x 21 inØ 33 in |
550 x 550 mm Ø 850 mm 21 x 21 inØ 33 in |
| EXTENSIONS | 1 / 2t (2 200 / 4 400 lb) | 1 / 2t (2 200 / 4 400 lb) | 1 / 2t (2 200 / 4 400 lb) | – |
| HAMMER LENGTH | 5 160 mm (203 in) | 5 900 mm (232 in) | 6 640 mm (264 in) | 7 380 mm (291 in) |
| HAMMER WEIGHT | 6 000 kg (13 228 lb) | 8 400 kg (18 519 lb) | 11 000 kg (24 251 lb) | 13 500 kg (29 762 lb) |
| RECOMMENDED POWER PACK | Junttan 15xCU | Junttan 15xCU | Junttan 15xCU | Junttan 15xCU |
HHKA-Serie models
