 BSP SL20da (1.5 ton) & SL30da (2.5 ton)
Hydraulic Piling Hammers
Introduction
Designed for driving sheet piles and small bearing piles of concrete, steel or timber. The SL range is available with legs and inserts for use freely suspended or with backguides for operating from a piling mast.
The SL20da and SL30da hammers are sized for driving single sheet piles and can pass between upstanding piles.
Using a unique BSP double-acting cylinder the ram is accelerated on its downward path to achieve higher impact energy. The energy is developed from a short stroke leading to a high blow rate and greater pile productivity compared to an equivalent single-acting hammer.
The low hook weight, and relatively small hydraulic power required to operate, make these hammers an economical option for the construction of pile walls, coffer dams and temporary earthworks.
The hammers are not limited to sheet piles but can be fitted out too drive bearing piles of pre-stressed concrete, steel or timber with ultimate load bearing up to 1800kN depending on site conditions.
BSP can provide a suitable power pack built around a perkins 1004-40T engine, weighing 2300kg gross, which develops up to 71Kw @ 1800rpm. Alternatively if the carrier is a hydraulic base with suitable open-circuit power-take-off the hammer can be easily plumbed in to this.
Control
The hammers are adjusted using a single variable flow control. The control box can be remote from the power pack or mounted on board.
Features/benefits
 Drives all single sheet piles
High impact to weight ratio
Can be suspended from small capacity cranes
Simple operation
Technical Data
| Hammers |
SL20da |
|
SL30da |
|
| Dropweight mass |
1,500kg |
3,300lb |
2,500kg |
5,500lb |
|
| Maximum energy |
20kJ |
15.000ft.lb |
30kJ |
22,000ft.lb |
| Blow rate @ maximum energy |
84 |
84 |
84 |
84 |
|
| Equivalent SA stroke |
0.1m to 1.35m |
4" to 53" |
0.1m to 1.25m |
4" to 49" |
| Hydraulic supply |
130 L/min |
35 US Gal/min |
130 L/min |
35 US Gal/min |
|
| Hydraulic pressure |
160bar |
2300psi |
220bar |
3200psi |
| Hammer length (with legs) |
3.575m |
140" |
4.575 |
180" |
|
| Hammer width |
0.915m |
36" |
0.915m |
36" |
| Hammer weight |
4,100kg |
9,000lb |
5,400kg |
11,900lb |
|
| Power Pack |
Hydro Pack 70 (for hammer range SL20, SL30 & CX40) |
| Engine Type |
Perkins 1004-40T |
|
| Engine Output |
71kW |
| Max. Oil Flow |
175 L/min |
|
| Max. Pressure |
250 bar |
| Fuel Tank Pressure |
260 Litres |
|
| Hyd. Oil Tank Capacity |
345 Litres |
| Length |
2.5m |
|
| Width |
1.1m |
| Height |
2.15m |
|
| Weight Dry |
1900kg |
| Weight Full |
2300kg |
|
| Noise Data |
Sound Power Level
Lwa (at source) |
Sound Pressure Level
Lwa (4m R) |
Sound Pressure Level
Lwa (15m R) |
| Hammer SL20/SL30 (Driving sheet piles crane suspended) |
125 dB(A) |
105 dB(A) |
93 dB(A) |
|
| Hydro Pack 70 |
106 dB(A) |
86 dB(A) |
73 dB(A) |
NB. Noise emissions will vary depending on type of pile being installed i.e. panel of sheet piles or single bearing pile, method of installation, site location and ambient noise.
Cylical operations will result in an overall reduction of noise (leq).
To calculate the noise level at further distances, reduce the noise level by 6dB(A) each time the distance is doubled. |
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