Underwater tools
KW Hydraulik - your specialist for hydraulic power units and tools offers you useful helpers in the underwater tools range. Take a look now!
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CS7 – 7.7 kW hydraulic chainsaw
Chainsaw with hand brake Three different types of chain are available - Planer-tooth: for wood, plastic and GRP without sand content - Carbide-tipped chain: for heavier-duty use on wood, plastic and GRP without sand content - Diamond-tipped chain: for concrete, cast steel, ductile iron and GRP containing sand Diver’s version, suitable for underwater use Suitable for work in potentially explosive atmospheres in accordance with the ATEX Directive 2014/34/EU: II2GcIIBT5 Vibration level: 3.6 m/s² Power: 7.7 kW / 5,000 rpm / 13.2 m/s Hydraulics: 40–50 L/min at 140–200 barCutting length: 27 to 103 cm Connection: ¾” x 16UNF-2B thread (Supplied without couplings) Contents: - CS-7.7 chainsaw - without guide bar - without saw chainSpecial order! Non-returnable.
- Available
- Delivery time : 3-4 weeks

DOA DHW17012 – Hydraulic impact wrench, 1-1/2". 17,000 Nm
The DOA DHW-17012 impact wrench delivers a torque of up to 17,000 Nm. It is ideal for mechanical and industrial workshops, infrastructure and railway applications, oil and gas, mining and cold-weather work sites where no compressed air supply is available.Torque control: adjustable torque up to 17,000 Nm3-jaw hammer mechanism Motor cover with heat dissipation Manual inverter Handle made entirely of ErgalErgonomic handle with integrated oil flowMechanical lever with safety leverCan be supplied with a T-handleUnderwater version for diving work and version with extended shaft
- Min. 1 Variant available.
- Delivery time : 3-4 weeks
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DOA AK46G-UW – Hand-held hydraulic core drill, D=50–160 mm – Underwater version
The DOA AK46GUW – hand-held hydraulic core drill, D=50–160 mm (underwater version) – has been specially developed for diving work and underwater operations. With a drilling diameter of 50 to 160 mm and a maximum torque of 84 Nm, the machine is ideal for demanding core drilling in concrete, stone or masonry – even under difficult conditions in wet environments or in pipework construction. The AK46GUW is fitted with a safety valve that automatically shuts off in the event of jamming, an integrated water connection and a mounting spindle with a 1-1/4" external thread and a 1/2" internal thread. The hydraulic output of 20–34 l/min at 105–170 bar, a back pressure of up to 90 bar and a speed of 400–600 min⁻¹ ensure powerful and precise drilling performance. Weighing just 8 kg and with compact dimensions (9 × 32 × 40 cm), the AK46GUW is particularly easy to handle and ideally suited for mobile use underwater. It is a reliable specialist tool for professional use in construction, industry and for underwater repair and installation work. Available from KW Hydraulik – your specialist supplier of DOA hydraulic special-purpose tools and equipment. Safety valve with shut-off in the event of snagging 84 Nm max. torque Water connection Mounting mandrel: 1-1/4" external , 1/2" internalHydraulics: 20–34 L/min at 105–170 bar, back pressure: 90 bar Drilling diameter: ø 50–160 mmRotational speed: 400–600 rpmDimensions: 9 × 32 × 40 cmWeight: 8 kgUnderwater version for diving operations
- Available
- Delivery time : 1-2 weeks
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DOA AK46S-UW – Hand-held hydraulic core drill, D=20–100 mm – underwater version
Safety valve with shut-off in the event of jamming 84 Nm maximum torque Water connection Mounting spigot: 1-1/4” external threadHydraulics: 20–34 L/min at 105–170 bar, back pressure: 90 bar Drill diameter: ø 20–100 mmRotational speed: 1000–1500 rpmDimensions: 9 × 32 × 40 cmWeight: 8 kgUnderwater version for diving operations
- Available
- Delivery time : 1-2 weeks
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DOA AK50-100cc – Hand-held hydraulic core drill, D=125–250 mm – Underwater version
(13.4) Drive motor for AK-50: 100 cc Motor
The DOA AK50-100cc – hand-held hydraulic core drilling machine, D=125–250 mm (underwater version) – is a powerful specialist tool for precise core drilling underwater. Equipped with a 100 cc hydraulic motor, the machine is ideal for large drilling diameters of up to 250 mm – for example, in foundation work, pipework or maritime construction projects. Thanks to the compatible standard mount for drilling stands (drill rigs), the AK50-100cc can be guided with precision. A particular highlight: the hydraulic motor is interchangeable, enabling a high degree of adaptability whilst keeping operating costs low. Depending on the drilling diameter and hydraulic power, the unit achieves 300 min⁻¹ for Ø 130–250 mm (30 l/min) or 380 rpm at Ø 125–180 mm (38 l/min). The machine operates within a hydraulic range of 30–40 l/min at 200 bar, with a permissible back-pressure of 90 bar. An integrated water connection, a robust mounting spigot (1-1/4" external / 1/2" internal) and the well-thought-out, modular design make the AK50-100cc a reliable tool for professional diving operations. With compact dimensions of 54 × 22 cm and a weight of 13 kg, it is robust yet manoeuvrable – ideal for mobile underwater use. The DOA AK50-100cc is available from KW Hydraulik – your specialist for hydraulic drilling technology and underwater applications featuring DOA technology. Notes:Core drilling machines for mounting on booms. The hydraulic motor can be replaced quickly. This enables a wide range of applications and reduces costs.Features: Motor:100 cc hydraulic motor for diameters of 125–250 mm D = 130–250 mm – 300 rpm at 30 L/min.D = 125–180 mm – 380 rpm at 38 L/min.Standard mounting for drill standWater connection Mounting spindle: 1-1/4" external , 1/2" internalHydraulics: 30–40 L/min at 200 bar, back pressure: 90 bar Drilling diameter: ø125–ø250 (depending on the motor fitted) Speed: 300–380 rpm (depending on the motor fitted)Dimensions: 54 x 22 cmWeight: 13 kgUnderwater version for diving operations
- Available
- Delivery time : 1-2 weeks

DOA DHW301 – Hydraulic impact wrench, 1". 3,000 Nm
The DOA DHW-301 impact wrench delivers a torque of up to 3000 Nm. It is ideal for mechanical and industrial workshops, infrastructure and railway applications, oil and gas, mining and cold-weather work sites where no compressed air supply is available.Torque control: adjustable torque up to 3,000 Nm3-jaw hammer mechanism type Motor cover with heat dissipation Manual speed variator Handle made entirely of ErgalErgonomic handle with integrated oil flowMechanical lever with safety leverUnderwater version for diving work and version with extended shaft available
- Min. 1 Variant available.
- Delivery time : 3-4 weeks

DOA DHW3034 – Hydraulic impact wrench, 3/4". 3,000 Nm
The DOA DHW-3034 impact wrench delivers a torque of up to 3000 Nm. It is ideal for mechanical and industrial workshops, infrastructure and railway applications, oil and gas, mining and cold-weather work sites where no compressed air supply is available.Torque control: adjustable torque up to 3,000 Nm3-jaw hammer mechanism Motor cover with heat dissipation Manual speed variator Handle made entirely of ErgalErgonomic handle with integrated oil flowMechanical lever with safety leverUnderwater version for diving work and version with extended shaft
- Min. 1 Variant available.
- Delivery time : 3-4 weeks

DOA DHW501 – Hydraulic impact wrench, 1". 5,000 Nm
The DOA DHW-501 impact wrench delivers a torque of up to 5000 Nm. It is ideal for mechanical and industrial workshops, infrastructure and railway applications, oil and gas, mining and cold-weather work sites where no compressed air supply is available.Torque control: adjustable torque up to 5,000 Nm3-jaw hammer mechanism Motor cover with heat dissipation Manual speed variator Handle made entirely of ErgalErgonomic handle with integrated oil flowMechanical lever with safety leverUnderwater version for diving work and version with extended shaft
- Min. 1 Variant available.
- Delivery time : 3-4 weeks

DOA DHW9512 – Hydraulic impact wrench, 1-1/2". 9,500 Nm
The DOA DHW-9512 impact wrench delivers a torque of up to 9,500 Nm. It is ideal for mechanical and industrial workshops, infrastructure and railway applications, oil and gas, mining and cold-weather work sites where no compressed air supply is available.Torque control: adjustable torque up to 9,500 Nm3-jaw hammer mechanism type Motor cover with heat dissipation Manual inverter Handle made entirely of ErgalErgonomic handle with integrated oil flowMechanical lever with safety leverCan be supplied with a T-handleUnderwater version for diving work and version with extended shaft
- Min. 1 Variant available.
- Delivery time : 3-4 weeks
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DOA HD13-UW – Hydraulic hammer drill with SDS-MAX chuck – underwater version
The DOA HD13 is a high-performance hydraulic hammer drill with an SDS-MAX chuck, specially designed for demanding applications in rock, concrete and masonry. Thanks to its robust construction, the HD13 is also suitable for use underwater, for example in underwater construction or for maintenance work in the maritime sector. With a hydraulic flow rate of 20–25 L/min at 140–170 bar, the hammer drill achieves a speed of up to 400 rpm and a striking rate of 2,000 blows per minute, enabling efficient work in the hardest materials. The SDS-MAX tool holder ensures quick and secure attachment of the tools. The integrated handle and speed limiter ensure ergonomic operation and a high level of safety – even during prolonged use. Weighing just 13 kg and featuring a compact design (52 cm), the tool can be used flexibly on construction sites or underwater. The HD13 is therefore the ideal tool for construction professionals in the steel construction sector, the building trade and for underwater work. The HD-13 hammer drill is a hammer drill for drilling into rock, concrete or masonry using SDS-MAX bits. Hydraulics: 20–25 L/min @ 140–170 barRotational speed: 400 rpm at 25 L/min. Impact rate: 2000 min⁻¹ HandleSDS-MAX tool holderSpeed limitDimensions: 52 cm Weight: 13 kg
- Available
- Delivery time : 3-4 weeks

HD – Hydraulic hammer drill with SDS-MAX chuck – underwater version
The DOA HD is a robust hydraulic hammer drill with an SDS-MAX chuck, specially designed as an underwater version for demanding tasks carried out by divers. With its high impact rate of 2,500 blows per minute, it is ideal for drilling into rock, concrete or masonry, even under extreme conditions. The HD hammer drill impresses with its compact design (50 cm long) and a weight of just 14 kg, which allows for easy handling underwater. The rotational speed is limited to 250 min⁻¹ at an oil flow rate of 23 L/min – ensuring the tool operates with both power and control. The ergonomic handle and the SDS-MAX tool holder enable safe and quick tool changes. Thanks to its hydraulic drive with a flow rate of 10–50 L/min at 100 bar, the HD is suitable for a wide range of applications – particularly in underwater engineering and in areas where conventional electric or pneumatic tools reach their limits. Important note: To ensure safe and compliant operation underwater, it is essential to order the appropriate safety low-pressure bypass valve (SN-DBV). Applications include, amongst others, the construction industry and railway engineering – wherever powerful, weather-independent underwater drilling is required. This hammer drill isfitted with an SDS-MAX tool holder. Hydraulics: 10–50 L/min at 100 barRotational speed: 250 rpm at 23 L/min Impact rate: 2,500 per minute HandleSDS-MAX tool holderSpeed limiter ATTENTION!!! Please order SN-DBV as well!Dimensions: 50 cm Weight: 14 kg
- Available
- Delivery time : 3-4 weeks

HD – Hydraulic hammer drill with SDS-PLUS chuck – underwater version
TheHD is a compact hydraulic hammer drill with an SDS-PLUS chuck, designed specifically for underwater use. Weighing just 8.2 kg and measuring 47 cm in length, it is particularly well suited to working in confined spaces – for example, during maintenance work, in civil engineering or in underwater applications. The hammer drill operates with an oil flow rate of 10–50 L/min at 50–114 bar, achieving a speed of 625 min⁻¹ at 23 L/min and 4,460 blows per minute. The tool holder is designed for SDS-PLUS drill bits up to Ø 22.2 mm – with STANLEY-DEWALT drill bits, diameters of up to 30 mm are even possible. Thanks to the integrated speed limiter and ergonomic handle, safe and controlled operation is guaranteed even under difficult conditions. Important note: For underwater use, it is essential to order the safety low-pressure bypass valve (SN-DBV). Ideal for use in the construction industry or for work in railway engineering, where reliable drilling is required regardless of weather conditions. This hammer drill isfitted with an SDS-PLUS tool holder. Hydraulics: 10–50 L/min at 50–114 barRotational speed: 625 rpm at 23 L/min. Impact rate: 4,460 per minute HandleSDS-PLUS diameter max. D=22.2 mm (30 mm with STANLEY-DEWALT drill bits)Speed limit ATTENTION!!! Please order the SN-DBV as well!Dimensions: 47 cm Weight: 8.2 kg
- Available
- Delivery time : 3-4 weeks
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HH10RV-UW – Hydraulically driven demolition hammer, HEX 19x50mm, underwater version
Weight: 9.9 kgVibration level: 9.6 m/s²Impact energy: 22 JImpact rate: 2100 rpmTool size: Hex. 19 × 50 mmHydraulic requirements: 20 L/min at 100–160 bar Special version for underwater use
- Available
- Delivery time : 3-4 weeks
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HSS6-UW – Hydraulic chainsaw, underwater version
Chainsaw with hand brake The new HSS hydraulic chainsaw is made entirely from stainless steel components and is therefore ideal for underwater use as well as for demanding heavy-duty work. It is designed for professional use across a wide range of applications – for example, for removing and cutting through wooden posts, docks, piers and harbour facilities. It can be used in flooded areas, industrial sites or on construction sites where water is present. Furthermore, the HSS is ideally suited to salvage and rescue operations (civil defence, fire service). The HSS guarantees high performance, long-term reliability and maximum safety for the user. • New ergonomic handle – improved grip and control, easy to clean Integrated flow-limiting valve in the handleSolid, milled aluminium central housingSafety chain brake with protective device On/off valve for chain lubrication with oil Hydraulic motor with mechanical seal – maximum continuous speed 7,000 rpm Tapered stainless steel sprocketSpecial order! Non-returnable.Technical specificationsChain length: 45–91 cmSpeed: 6,000 rpmHydraulics: 30–45 L/min, 160–170 barDimensions without chain: 55 x 24 x 25 cmWeight: 13 kg
- Available
- Delivery time : 3-4 weeks
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STANLEY BR87320 – Hydraulic demolition hammer, hand-held – underwater version
(18) Capacity: 32x152 mm (1-1/4"x6")
Standard demolition hammerTool holder: 32x152 mm hexagonal shank (1-1/4x6 in. hex)Oil flow required: 30 L/min.Underwater model, without couplingsWeight: 38 kg
- Available
- Delivery time : 3-4 weeks
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STANLEY CO-23-341-UW – Hydraulically driven cut-off grinder, Ø 250 mm
Saw blade diameter: 250 mmHydraulics: 38–57 L/min at 105–140 barWeight: 10.4 kgSupplied without cutting disc (please order separately)
- Available
- Delivery time : 1-2 weeks
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STANLEY DL07 – Hydraulic drill with toothed collar chuck, D=13mm – Underwater version
The STANLEY DL07 – hydraulic drill with a toothed collar chuck (D=13 mm) is a powerful, compact tool designed for professional underwater drilling. It is suitable for drilling in wood, metal and masonry up to Ø 13 mm and features a robust chuck, an ergonomic handle and a reversible rotation direction. With a hydraulic flow range of 11–45 l/min at 70–140 bar and a speed of 1000 min⁻¹ at 30 l/min, it delivers reliable performance – even under extreme conditions. Typical applications include the construction industry, steel construction, and demolition and recycling work. The DL07 is manufactured by the renowned brand STANLEY® and is available from KW Hydraulik – your expert in high-quality hydraulic tools. The STANLEY® drill is suitable for drilling holes in wood, metal or masonry up to 13 mm . Chuck capacity up to 13 mm Handle Reversible rotation Hydraulics: 11–45 L/min. at 70–140 barSpeed: 1000 rpm at 30 L/min. Dimensions: 230 × 100 mmWeight: 2.7 kg
- Available
- Delivery time : 3-4 weeks
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STANLEY DS11-5000-UW – Hydraulic diamond chain saw – underwater version
Hydraulics: 45 L/min at 140 barThe chain is tensioned by an adjusting screw and lubricated by the integrated lubrication systemBlade length (to be ordered separately): 38 or 45 cmWeight: 12.7 kg
- Available
- Delivery time : 3-4 weeks
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STANLEY GR-29-30101-UW – Hydraulically driven angle grinder, Ø 230 mm – Underwater version
Disc diameter: 230 mmTool holder: 5/8" – 11 threadsHydraulics: 26–34 L/min at 140 barCutting depth: 137 mm Weight: 5.7 kgSupplied without disc (please order separately)
- Available
- Delivery time : 1-2 weeks
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STANLEY HD45-UW – Hydraulic hammer drill with SKIL-736 chuck (HEX 19x108mm) – Underwater version
The STANLEY HD45 – hydraulic hammer drill with SKIL-736 chuck (HEX 19x108 mm) – is a robust impact tool designed for particularly demanding applications, including underwater use. Thanks to its high power and versatile features, the HD45 is ideal for drilling in concrete, asphalt or masonry with diameters ranging from 9.5 to 50 mm and a drilling depth of up to 90 cm. With core drill bits, drilling diameters of up to 76 mm are even possible. The adjustable speed range of 50 to 300 min⁻¹, the hydraulic flow rate of 26–34 l/min at 140 bar, and the integrated nitrogen pressure accumulator guarantee consistent impact force combined with precise control. Equipped with forward/reverse rotation, hose whips with flat-face couplings (ISO 16028) and a tried-and-tested SKIL-736 drill chuck, the HD45 meets the highest standards for professional use. The underwater version of the STANLEY HD45 is designed specifically for the construction industry, steel construction and heavy-duty demolition and recycling work. The tool weighs 21 kg and measures 57 cm – compact yet powerful. This professional tool is available directly from KW Hydraulik – your certified partner for high-quality hydraulic solutions from STANLEY®. The STANLEY® HD-45 hammer drill is a rotary impact tool for drilling into concrete, masonry or asphalt. Hydraulics: 26–34 L/min at 140 barAdjustable speed: 50 to 300 rpm Drilling diameter from 9.5 to 50 mm / 90 cm drilling depth Drilling diameter with core bits up to 76 mm Hose whips with flat-face couplings (ISO 16028) Nitrogen pressure accumulator Clockwise / anti-clockwise rotation Underwater versionDimensions: 57 kgWeight: 21 kg
- Available
- Delivery time : 3-4 weeks

STANLEY ID07 – Hydraulic impact wrench, 1/2". 675 Nm
The STANLEY® ID-07 impact wrench delivers a torque of up to 675 Nm,makingit the ideal tool for drilling holes with diameters ranging from 12 to 27 mm. No torque reaction on the user Forward/reverse rotation Large switch for easy operation, even when wearing work gloves Standard version
- Min. 1 Variant available.
- Delivery time : 3-4 weeks

STANLEY IW12 – Hydraulic impact wrench, 3/4". 340–1632 Nm
The STANLEY® IW-12 impact wrench delivers a torque of up to 1632 Nm. The IW-12 is used for driving nuts, bolts andanchor bolts, and is also suitable for drilling into wood. No torque reaction on the user Adjustable pressure, oil flow rate, 70–140 bar working pressure Forward/reverse rotation Large switch, suitable even for operation whilst wearing work gloves
- Min. 1 Variant available.
- Delivery time : 3-4 weeks

STANLEY IW16 – Hydraulic impact wrench, 1". 680–3400 Nm
The STANLEY® IW16-Standard hydraulic impact wrench has been designed for heavy-duty use and delivers an impressive torque of up to 3,400 Nm. It is the ideal solution for use in steel construction and the building trade, where large bolted joints or assembly work under heavy loads must be carried out reliably and safely. The IW16 is ideally suited for driving threaded nuts, bolts and anchor bolts, as well as for other applications requiring high torque. This powerful impact wrench produces no recoil for the user, features forward and reverse rotation, and has adjustable pressure to ensure optimal adaptation to the application scenario. The large D-handle is easy to operate even when wearing work gloves and, together with the additional grip, ensures safe and ergonomic working – even during long shifts. Ideal for robust, day-to-day use on building sites and in industry. The STANLEY® IW-16 impact wrench develops a torque of up to 3,400 Nm. The IW-16 is used for driving nuts, bolts and anchor bolts, as well as for other heavy-duty applications. No torque reaction on the user Adjustable pressure Forward/reverse rotation Large ‘D’ handle, suitable for use even when wearing work gloves Support handle
- Min. 1 Variant available.
- Delivery time : 3-4 weeks
Tools for working under water
- Drilling machines / impact wrenches / core drills
- Rotary hammers
- Demolition hammers / chisel hammers
- Angle grinders / cut-off grinders
- Chain saws / diamond chain saws
- Submersible pumps




