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BSP 357-9

Hydraulic Piling Hammer

Introduction

The BSP range of hydraulic hammers has been developed since the mid 1970's and aims to bring the most recent technology to pile driving techniques. With more than 70 years experience, BSP have maintained long contact with pile driving contractors and with their help have built a hammer which can meet most driving conditions likely to be encountered anywhere in the world.

As there is no exhaust these hammers can be used within pile tubes or noise reducing sleeves, thereby making pile driving in an urban environment more acceptable without reducing efficiency.

Design concept

The hammer system has been designed with flexibility of use as one of the major objectives. The modular form and interchangeability of parts allows a wide range of piling techniques to be undertaken with one complete hammer system. The hammer can be tailored to suit any customer and/or piling requirements without radical changes in design and be environmentally acceptable in the modern world.

It can be used in a piling lead, pile frame or freely suspended. The design incorporates either solid or segmental ram weights, and with its variable stroke control gives a wide pile driving energy range.

With extra sealing and modification of controls the hammer can also be used under water to depths exceeding 100 metres.

Versatility

A major benefit of the BSP hydraulic hammer is its versatility and it is suitable for driving all types of steel sheet piles, pre-cast reinforced concrete, pre-pressed concrete and timber. It is adaptable to a wide range of energy and pile requirements and the modular construction with interchangeable ram weights etc, leads to a more economical total hammer package.

Modifications for large diameter tubes

Watson & Hillhouse have increased further the versatility of the 357-9 hammer by building a special wide leg assembly to enable 1.2m O/D tubular piles to be driven. Further modifications to the hammer by ourselves also means that it can be fitted inside a Delmag MA270 leader to drive upto 2.0m O/D tubular piles

Technical Data

Hammer size		HH3	HH5	HH7	HH9
Ram weight	Tonne	3	5	7	9

Ram stroke	Metre	-(Variable 0.2 to 1.21)-
Energy at max stroke	Kgm	3600	6000	8400	10800

Blow rate at max stroke	bpm	46	42	40	32
Basic hammer weight	Tonne	5.25	7.25	9.25	11.25

Drive cap weight simple flat form	Tonne	0.99	0.99	0.99	0.99
Overall width basic hammer	Metre	05.20	5.80	6.40	6.40

Overall length basic hammer	Metre	0.76	0.76	0.76	1.25
Overall depth basic hammer	Metre	0.82	0.82	0.82	0.82

Hydraulic operating pressure	Bar	160	210	240	265
Hydraulic oil flow rate	Lit/m	152	180	190	190

Hose weight (full) per metre	Kg	10	10	10	10

Widths & dimensions of hammer equipped for leader operation
Total weight excluding hoses	Tonne	6.30	8.30	10.30	12.30

Overall length with flat cap	Metre	5.25	5.85	6.45	6.45

Widths & dimensions of hammer equipped for suspension operation
Total weight excluding hoses	Tonne	7.10	9.10	11.10	13.10

Overall length	Metre	7.00	7.55	8.10	8.10
Protection of legs below pile top	Metre	1.44	1.44	1.44	1.44

Weight & dimensions for driving large diameter tubes available on request

Noise enclosure - optional extra
The enclosure is a common size for all hammers

Total additional weight to hammer	0.48 tonne leader operation
	0.34 tonne suspension operation

Overall dimensions	Depth 0.97m	Width 0.89m
Projection below pile top	0.65m

Hydropack for 357-9 Series
Dimension	Length 2.4m	Height 1.9m	Width 1.1m

	7.8ft	3.6ft	6.5ft
Weight	Dry 2.0 tonne	Full 2.45 tonne

Operating pressure	265 bar 3845 psi
Variable flow at high output	190 litre/min 42 imperial gallons/min

Engine power - typical	118 kw 158 bhp
Engine (turbocharged diesel)	Deutz BF6M1012C

Fuel tank capacity nominal	230 litre 51 imperial gallons
Hydraulic oil capacity nominal	300 litre 66 imperial gallons

Hydropack weight	Dry 2.0 tonne 4410lb. Full 2.45 tonne 5400lb.