Hydraulic power units are the backbone of hydraulic systems, providing consistent flow and pressure to ensure reliable performance across a wide range of demanding applications. These units are essential for reducing downtime and enhancing system efficiency, from powering hydraulic motors and cylinders to maintaining safe and efficient operations.
At Hydraulic Supply Company, we offer a comprehensive selection of hydraulic power units, including A/C Power Units, DC Power Units, and a wide range of power unit accessories. Whether you need a compact, portable unit or a high-pressure system, our solutions are made to meet your operational needs. For unique requirements, our Custom Power Units Program allows you to tailor hydraulic power units to your specific application. From industrial and mobile systems to specialized electric or diesel-powered units, we provide flexible solutions backed by decades of expertise.
In addition to our extensive inventory, we provide expert repair services to extend the lifespan of your equipment and minimize operational disruptions. This ensures your systems continue to operate efficiently, even in the most challenging environments. Explore our range of hydraulic power units and accessories or inquire about custom solutions to find the perfect fit for your hydraulic system.
HSC stocks a broad selection of hydraulic power units — from compact 12V DC units for truck-mounted liftgates to AC-powered industrial systems for shop presses and manufacturing. Our specialists match output flow, pressure, and reservoir capacity to your application. Same-day shipping, 40+ locations.
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Hydraulic power units are indispensable across industries like construction, agriculture, manufacturing, and transportation, delivering reliable pressurized flow to power critical components such as hydraulic motors and cylinders. Their adaptability makes them suitable for a wide range of operational needs, from heavy-duty industrial machinery to compact and portable systems for mobile applications.
These units ensure efficient and safe operation by providing consistent power to hydraulic systems in various environments, whether managing high-pressure systems or supporting precision tasks in demanding conditions. With options for A/C and DC power units, as well as portable and compact designs, hydraulic power units offer unmatched flexibility to fit diverse applications.
Browse Hydraulic Supply Companyrsquo;s selection of hydraulic power units and power unit accessories to find the perfect solution for your needs. For customized requirements, take advantage of our Custom Power Units Program, offering tailored solutions to meet specific operational demands.
Hydraulic Power Units FAQs
What are hydraulic power units, and how do they work?
Hydraulic power units are devices that generate and control pressurized hydraulic fluid to power components like motors and cylinders. They work by using an electric motor, pump, and reservoir to deliver consistent fluid flow and pressure for efficient system operation.
What types of hydraulic power units do you offer?
We offer a wide variety of hydraulic power units, including A/C Power Units, DC Power Units, portable hydraulic power units, and high-pressure systems. Our selection also includes power unit accessories to enhance functionality and meet specific application needs.
How do I choose the right hydraulic power unit for my application?
Selecting the right unit depends on factors such as system pressure, flow requirements, and operational environment. Consider whether you need a compact, portable design or a high-pressure unit for industrial applications.
Do you offer custom hydraulic power units?
Yes, we provide custom hydraulic power units tailored to your unique specifications. Our team works with you to design and build solutions that deliver maximum performance and efficiency for your specific application.
What maintenance is required for hydraulic power units?
Regular maintenance includes checking fluid levels, inspecting hoses and connections for leaks, and replacing filters to ensure optimal performance. Periodic system inspections help prevent downtime and extend the life of your hydraulic power unit.
How to Choose the Right Power Unit
Determine your power source first, match flow and pressure to the application second, and size the reservoir for your duty cycle before specifying the final unit.
Determine Power Source: AC or DCThe first decision is power supply. DC power units (12V or 24V) run from a vehicle battery or auxiliary power source — making them the right choice for mobile applications including truck-mounted liftgates, dump bodies, snowplow controls, and off-road equipment. AC power units use single- or three-phase electric motors and are suited for stationary shop, industrial, and manufacturing applications where utility power is available at the installation point.
Match Flow Rate and Pressure to the ApplicationCalculate the GPM your actuator requires to move at the correct speed, and confirm the maximum operating pressure your system demands. Power units are rated for a specific pump displacement and motor speed that determine their output flow, and a maximum system relief valve setting that determines their pressure ceiling. Undersizing either parameter limits actuator performance; oversizing adds unnecessary cost and weight — especially critical in mobile installations.
Size the Reservoir for Duty Cycle and HeatReservoir capacity is a heat management decision as much as a fluid storage decision. Intermittent-duty applications — a liftgate that cycles a few times per shift — can operate with smaller reservoirs. Continuous or high-cycle applications generate significant heat that requires sufficient reservoir volume to dissipate between cycles and prevent fluid degradation. As a general guideline, reservoir capacity should be at least three to five times the pump’s per-minute flow rate for standard duty cycle applications.
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HSC works with industries that depend on reliable hydraulic and pneumatic systems, providing access to in-stock components, service capabilities, and knowledgeable support across diverse applications.
Hydraulic power units are used across transportation, construction, agriculture, and manufacturing to eliminate the need to source and assemble individual components. In transportation, DC units drive liftgates and dump body hoists. In construction, portable units supply hydraulic force to attachments and forming systems. In manufacturing, AC power units drive presses, clamping fixtures, and conveyor actuators. HSC stocks DC and AC power unit configurations for any application — with same-day shipping and technical support at 40+ branch locations.
Power Unit Components Matter
A power unit built with undersized pumps, undersized reservoirs, or poor quality motors will run hot, cycle slowly, and fail earlier than the equipment it powers. Cheap solenoid valves and manifolds introduce leak points that compound with every operating hour. HSC stocks power units and components rated to real duty cycle specifications. Our specialists help size the right unit, select the control configuration, and identify accessories needed to complete the installation.
Frequently Asked Questions
What is the difference between a DC and an AC hydraulic power unit?
DC power units run from 12V or 24V battery power, making them ideal for mobile and truck-mounted applications where utility electricity is not available at the point of use — liftgates, dump bodies, and mobile work equipment. AC power units use single- or three-phase electric motors and are designed for stationary shop and industrial installations where consistent utility power is available. AC units generally support higher duty cycles and larger flow output than comparably sized DC units.
How do I select the right power unit for a liftgate or dump body application?
Match the unit’s rated flow (GPM) and pressure (PSI) to the actuator’s cycle time and load requirements specified by the liftgate or body manufacturer. Verify the voltage matches the vehicle’s electrical system (12V or 24V), and confirm the reservoir capacity is adequate for the expected cycle frequency per shift. For high-cycle applications, select a unit rated for continuous duty rather than intermittent use.
Can I build a custom power unit using individual components from HSC?
Yes. HSC stocks all of the components needed to build a custom hydraulic power unit — pumps, motors, reservoirs, manifolds, valves, filtration, and mounting hardware. Our fluid power specialists can help you select compatible components, verify system integration, and identify any accessories needed to complete the assembly. For complex or high-cycle custom applications, we can also connect you with our engineering support resources.
What causes a hydraulic power unit to run hot?
The most common causes are an undersized reservoir for the duty cycle, a clogged return filter restricting heat exchange, operating above the relief valve setting continuously (which converts all pump output to heat), and insufficient cooling in the installation environment. Checking fluid level, filter condition, relief valve setting, and reservoir temperature regularly during initial commissioning will identify heat issues before they shorten component life.
Does HSC stock hydraulic power units for same-day pickup or shipping?
HSC maintains in-stock hydraulic power units across DC and AC configurations, along with a comprehensive selection of power unit accessories and components. Same-day shipping is available on orders placed before 2pm EST, and with 40+ branch locations across the Southeast, there is likely an HSC store near you with the power unit or components you need already on the shelf.
