Hydraulic Pumps & Motors
Power & Precision – Marine Hydraulics.
Our Advantage
- Reconditioned & reusable units
- High-torque, high-pressure
- World-leading manufacturers
- Extensive stock availability
- Rigorous quality testing
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We house the industry's most extensive inventories of Reconditioned and Reusable Hydraulic Pumps and Motors. Specializing in high-torque, high-pressure systems for deck machinery, winches, and steering gear, we provide a vital lifeline for vessels requiring rapid parts replacement.
Our extensive stock ensures you can avoid the long lead times of new manufacturing, keeping your operations running smoothly.
Our Extensive Brand Portfolio
We are global specialists in sourcing and restoring hydraulic components from world-leading manufacturers:
Primary Makes
Specialized Marine Brands
Industrial Standards
Technical Stock List & Model Availability
We maintain ready stock for the following high-demand series and models:
Kawasaki / Staffa
- Motors: BZ Series (740 S1008, 725, 732), Staffa SX 510-110, SX 508 AM
Fukushima
- Motors: MA5, MA7, MA8B/C, MA10B/C, MGA8, DC 17
- Pumps: D14-18 to G-20, EG Series, G-318
Norwinch
- Motors: M 380, M 204, M 540, M 140
- Pumps: PH-8, PH-11
IHI
- Motors: 55S, HNK, HLA, KMV, HVL Series
- Pumps: HPS 4-8, HPD Series, 6S N 48-48
Hydromatik / Rexroth
- Motors: A2F Series (24 to 1000)
- Pumps: A2V Series (28 to 225)
Kayaba / Nikko Sauer / Danfoss
- Motors: MK 180DT/90DT, Nikko ThermoHex PTV 40 to PTV 330
- Motors: SMF 21, 23, 24
- Pumps: SPV/OPV 27, 23, 21, 24. Danfoss 50/100/150
Rigorous Testing & Quality Assurance
Hydraulic systems operate under extreme pressure; therefore, reliability is our primary focus. Every unit undergoes strict technical evaluation before delivery:
Precision Testing
All pumps and motors are pressure-tested to ensure volumetric efficiency and torque conformance
NDT Inspection
Comprehensive Non-Destructive Testing on casings and shafts to ensure zero structural fatigue
Technical Insights: Marine Hydraulic Pumps & Motors
Expert engineering observations from our dismantling facility.
What Is It?
Marine hydraulic systems utilize pressurized hydraulic fluid to transmit massive amounts of power for heavy lifting and steering operations. The system comprises a prime mover (electric motor) driving a hydraulic pump, which generates high-pressure fluid flow. This fluid is routed through control valve blocks to hydraulic motors (or cylinders) that convert the hydraulic energy back into immense mechanical torque. We specialize in sourcing heavy-duty, high-torque radial piston and axial piston units from brands like Rexroth, Kawasaki Staffa, and Mitsubishi.
Applications
High-torque hydraulic motors are the driving force behind a vessel's deck machinery. They power cargo cranes, anchor windlasses, and mooring winches, allowing them to handle massive static and dynamic loads during port operations and anchoring. Hydraulic pumps, particularly variable displacement axial piston pumps (like the Kawasaki K3VL series or Rexroth A4VG), are universally employed in the steering gear room to actuate the rudder rams, requiring absolute precision and reliability.
Common Failure Modes
Contamination of hydraulic fluid is the root cause of 80% of hydraulic failures. Particulate matter scores the highly polished surfaces of pistons, cylinders, and valve plates, resulting in internal leakage (slip). When internal slip increases, the hydraulic motor loses torque, meaning a crane can no longer lift its rated Safe Working Load (SWL). In axial piston pumps, cavitation caused by cold, viscous oil during startup can quickly destroy the bronze slipper pads and the swashplate.
Inspection Process
Our evaluation of salvaged hydraulic units is meticulous. The unit is dismantled to inspect the rotating group. For piston motors, the cylinder block bores and piston diameters are micro-metrically checked for clearance tolerances. The valve plate and cylinder block mating surfaces are inspected for scoring and, if necessary, lapped to a mirror finish. Following reassembly with new seals and bearings, the pump/motor is mounted on our hydraulic test bench and subjected to a rigorous pressure and flow test to verify its volumetric efficiency under load.
Buyer Considerations
Identifying hydraulic components can be challenging as the OEM identification plates are often corroded or missing after years on an exposed weather deck. When requesting a quote, provide clear photos of the unit, note the exact shaft type (splined or keyed), and specify the flange mounting pattern. If replacing a variable displacement pump, you must also accurately identify the type of control regulator fitted (e.g., pressure-compensated, load-sensing, or proportional control) to ensure the replacement integrates seamlessly with your vessel's control system.
Hydraulic Pumps & Motors — Common Questions
Answers to specific questions our clients ask about sourcing marine hydraulic equipment.
Which hydraulic pump brands do you supply for marine deck machinery?
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We specialize in supplying heavy-duty marine hydraulic pumps from leading manufacturers such as Kawasaki (K3VG, K3VL series), Rexroth, Vickers, Nachi, Parker, and Danfoss. These are primarily sourced from steering gears, deck cranes, and mooring winches of dismantled vessels.
Can you supply hydraulic motors for ship deck cranes and mooring winches?
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Yes, we stock radial piston, axial piston, and gear-type hydraulic motors suitable for marine deck cranes, mooring winches, and windlasses. Each motor is torque-tested and checked for internal fluid leakage prior to dispatch.
What is the lead time for a reconditioned Kawasaki variable displacement hydraulic pump?
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For standard Kawasaki and Rexroth variable displacement axial piston pumps in our inventory, reconditioning and testing take approximately 3-5 days. The unit is then ready for immediate global air freight dispatch.
Request a Quote
Contact us with your hydraulic pumps and motors requirements today. Our team will provide you with detailed information, pricing, and availability for reconditioned hydraulic components from world-leading manufacturers, backed by rigorous testing and quality assurance.