Double-Acting Hydraulic Impact Hammers Hire

About Double-Acting Hydraulic Impact Hammers

Double-Acting Hydraulic Impact Hammers are designed to drive a wide range of pile types and sizes including single steel sheet piles, universal steel bearing piles and tubular piles.

The SL range of hammers concentrate the impact on a single pile providing the most effective use of the high energy produced. The low overall weight of the hammer avoids the necessity to use large cranes. The stroke is infinitely adjustable allowing full control at all stages of the driving. Safety and accuracy are assured via the inserts which are spring-loaded enabling the hammer to remain correctly located on the pile at all times.

The CX range of hammers can be used on a wide rangeof pile types and sizes:

  • Steel sheet piles in pairs
  • Universal tubular bearing piles
  • Steel ‘H’ piles
  • Steel combi piles
  • Reinforced concrete RC piles
  • Cast in situ CIS piles
  • Timber piles

Selection of the correct ram weight depends on pile section, length & ground conditions. the SL & CX hammers can be used crane suspended. the controls allow the operator to adjust the stroke and blow rate and the hammer can be operated on automatic or by manual operation on each blow.


Model SL20da (HH1.5 DA) SL30DA (HH2.5 DA)
Ram Weight (kg) 1500 2500
Maximum impact energy (kgm) 1850 2940
Blow rate at maximum power (bpm) 80 87
Hydraulic oil pressure (bar) 130 220
Hydraulic oil flow (l/min) 170 130
Hammer weight crane-suspended (kg) 3900 5400
Dimension (see drawing):    
Height A 4922 5780
Width B 1094 915
Length C 1439 1459
Depth D 460 458
Dimension E 478 430
Power Pack    
Engine Deutz FL 913 Perkins 1004-40T
Dimensions/Weight: 53 kW (71HP) 71 kW (95 HP)
Length (mm) 2020 2500
Width (mm) 1100 1100
Height (mm) 1500 2150
Weight (kg) 1800 2300
Model CX85 CX110
Ram Mass (kg) 7000 9000
Maximum impact energy (kNm) 83 106
Blow rate (bpm) 40/100 36/100
Basic hammer weight (less helmet) (kg) 9800 12050
Overall length basic hammer (A) (mm) 4975 5475
Overall width basic hammer (mm) 820 820
Overall depth basic hammer (mm) 970 970
Typical stand-off CL (Hammer to Leader Face) (mm) 500 500
Hydraulic pressure requirements (bar) 240 250
Hydraulic flow rate requirements (l/min) 200 215

Technical Library

Larssen Pile Information 602 - 607

Larssen Pile Information 602 - 607

Specification, Information and interlocking options for the Larssen Piles, 602 - 607


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