Products
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FV-350S Series Photovoltaic Pile Driving/Extraction Machine
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FV-600 Series Four Eccentric Pile Driving/Extraction Machine
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Electric Vibrating Hammer DZ60A
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Hydraulic Impact Hammer HDY22
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FV-280 Series Photovoltaic Pile Driving/Extraction Machine
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Hydraulic Vibrating Hammer HV-80
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High Frequency Vibrating Hammer FV-400
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FV-330 Series Photovoltaic Pile Driving/Extraction Machine
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SV-300 Series Side Clamping Pile Driving/Extraction Machine
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Taiwan PCF-450 series pile driving/extraction machine
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HDY5 Hydraulic Impact Hammer
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High Frequency Vibrating Hammer FV-350
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Mini pile driving/extraction machine FV-150 series
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Electric Vibrating Hammer DZ150A
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FV-250R Series 360° Rotating Pile Driving/Extraction Machine
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Mini pile driving/extraction machine FV-100 series
Hydraulic Impact Hammer HDY25
HDY25 High Stroke Hydraulic Impact Hammer
Mega impact hammer 375 kNm
25 ton strike hull
Maximum piston stroke 1500 mm
Adjustable blowing frequency: 20-70 beats per minute.
Power station with two D series pumps
raised chassis system
Heavy Precast/Steel Piling Specialist
Description
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HDY25 High Stroke Hydraulic Impact Hammer – 375kNm Powerful Piling Hammer | 25 Ton Impact Housing for D Series Power Plants and Large Diameter Pipe Piles
Description:
The HDY25 High Stroke Hydraulic Impact Hammer is the flagship of the HDY range, a powerful 375kNm piling hammer designed for the largest foundation projects: offshore wind turbine mono-pillar crossings, deep-sea port terminals, high-rise building foundation slabs and bridge abutments requiring 2m diameter steel or precast piles. Where more compact hammers have difficulty driving piles into load-bearing rock, the HDY25 high-stroke hydraulic impact hammer provides the force needed to complete the drive.
The design is based on a 25-ton (25,000 kg solid steel) impact mechanism that free-falls from a maximum stroke height of 1,500 mm. This combination provides a maximum impact energy of 375 kNm per impact - enough to drive a 1.8 meter diameter steel tubular pile through dense glacial drift or weathered sandstone.
Adjustable blow rate of 20-70 bpm allows the operator to fine-tune the blow frequency: lower frequencies (20-30 bpm) for deep, hard layers, ensuring full energy transfer; higher frequencies (50–70 bpm) for softer areas, maintaining penetration momentum.
The HDY25 high-stroke hydraulic impact hammer is driven by a D-series dual-pump power unit (D360 or D550). D360 provides a capacity of 480 l/min at 26 MPa; D550 - 900 l/min at 27 MPa, which allows you to achieve the fast cycle speed required to operate a pile driver with a mega impact of 375 kNm. The power plant includes two Rexroth A11VLO pumps (one 260 cc, the other 190 cc) driven by a 410-550 kW diesel engine, with a 1600 liter hydraulic tank and a 650 liter fuel tank. The D-Series dual-pump power unit also includes a separate circuit for vibratory hammers, providing versatility.
The oversized chassis system with increased height provides a maximum stroke of 1500 mm and a total hammer height of 8.62 meters (dimension B: 9.38 m with guide). This oversized chassis system is reinforced to withstand the reaction forces of 25-ton masses stopping and changing direction every second. The chassis includes hydraulic shock absorbers at the top and bottom of the travel, reducing mechanical shock and extending component life.
The impact absorption system, incorporating a multi-layer impact plate and polyurethane pile cap buffer ring, transfers 375 kNm of driving force to the pile cap while protecting internal hammer components. Field data shows that the buffer ring can withstand more than 10,000 impacts in sand and gravel soils. Specialization in heavy precast/steel piles reflects the HDY25 hammer's ability to drive precast concrete tubular piles up to 1200mm diameter, steel tubular piles up to 2000mm diameter and concrete square piles without cap peeling - thanks to precisely matched impactor geometry and shock absorption.
The total weight of the hammer (including guide) is 38,000 kg, and the chassis is 870 kg. The cylinder uses Trelleborg seals and the main control valve is a Rexroth solenoid operated cartridge unit. An on-board sensor suite monitors piston position, number of strokes and oil temperature, displayed on a touch screen installed in the cockpit.
For contractors working in the most challenging piling conditions - driving piles into rock, penetrating boulder layers or reaching driving depths of up to 40 meters - the HDY25 long stroke hydraulic impact hammer delivers a maximum impact force of 375 kNm. Featuring a 25 tonne impact body, a maximum stroke of 1500mm, a variable impact rate of 20-70bpm, a dual-pump D-series powerplant and an extended height suspension system, the HDY25 long stroke hydraulic impact hammer turns the most challenging piling contracts into a controlled and repeatable operation.
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