Verified 21 July 2026

Hydraulic power units manufacturers in United States

Buyers searching for hydraulic power unit (HPU) manufacturers in the United States will find both OEM builders that design and assemble complete units and companies that produce key HPU components (pumps, manifolds, reservoirs) and supply assembled power units. When choosing a supplier, confirm whether they build complete electric- or diesel-driven HPUs, have OEM experience for your industry, and can meet required standards and quantities.

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9 verified manufacturers

  • ParkerUnited States

    “Parker US product page: "Hydraulic power units consisting of pumps, reservoirs, relief valves, filters... Parker deliver reliable power" (ph.parker.com/us/en/series/hydraulic-power-units).”

  • Hannon HydraulicsUnited States

    “Hannon Hydraulics: "Hannon Hydraulics has been a leader in manufacturing hydraulic power units (HPU) for 40 years. We custom design both electric motor and diesel engine HPUs" (hannonhydraulics.com/equipment/hydraulic-power-unit/).”

  • Bailey International LLCUnited States

    “Bailey International product page: "Power Units — Hydraulic Power Units (HPUs) built." (baileyhydraulics.com/products/power-units/).”

  • Magister HydraulicsUnited States

    “Magister Hydraulics: "Magister Hydraulics is a well-known manufacturer of hydraulic power packs from New Jersey since 1998." (magisterhyd.com/custom-power-units/).”

  • Robeck Fluid Power Co.United States

    “Thomasnet listing snippet: "Explore Recommended Hydraulic Power Units Suppliers · Robeck Fluid Power Co. · Advanced Fluid Systems, Inc. · Magister Hydraulics · WPT Power Corporation." (thomasnet.com/suppliers/usa/hydraulic-power-units-39681002).”

  • Advanced Fluid Systems, Inc.United States

    “Thomasnet listing snippet names Advanced Fluid Systems, Inc. among recommended hydraulic power unit suppliers (thomasnet.com/suppliers/usa/hydraulic-power-units-39681002).”

  • WPT Power CorporationUnited States

    “Thomasnet listing snippet names WPT Power Corporation among recommended hydraulic power unit suppliers (thomasnet.com/suppliers/usa/hydraulic-power-units-39681002).”

  • Morrell, Inc.United States

    “IndustryNet "Top 10 hydraulic power unit companies in the U.S." snippet lists Morrell, Inc. among US manufacturers (industrynet.com/blog/whos-making-hydraulic-power-units-in-the-us).”

  • Electro-Hydraulic Automation, Inc.United States

    “IndustryNet snippet lists Electro-Hydraulic Automation, Inc. in a top ten list of U.S. hydraulic power unit companies (industrynet.com/blog/whos-making-hydraulic-power-units-in-the-us).”

Compiled from public sources and refreshed periodically. Always verify certifications and capabilities directly with the manufacturer before ordering.

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What to specify in your RFQ

Manufacturers quote faster and more accurately when your request covers these points.

  • Power source (electric or diesel)

    Specify motor type, voltage, phase, horsepower or diesel engine model so manufacturers can size the unit.

  • System pressure and flow

    Give required maximum operating pressure (psi/bar) and nominal flow rate (GPM/LPM) including peak demands.

  • Fluid type and reservoir capacity

    Specify fluid grade (e.g., AW hydraulic oil), temperature range, and required reservoir liters/gallons.

  • Valving and control requirements

    List required valves (relief, directional, proportional), controls (PLC, remote start), and electrical I/O.

  • Mounting, footprint and enclosure needs

    Provide dimensional constraints, noise/insulation requirements, and enclosure/IP rating for the environment.

  • Certifications and standards

    State any required industry standards or certifications (e.g., NFPA, CE, UL, MIL, ATEX) or customer-specific testing.

  • Quantity and lead time expectations

    Indicate single prototype vs. production run, expected annual volumes, and target delivery schedule.

  • Accessories and filtration

    Note required filtration ratings, coolers/heaters, sight gauges, gauges, and hose/fitting preferences.

Sourcing FAQ

How do I evaluate HPU manufacturers?
Ask for past project references, photos or datasheets of delivered units, test reports, and clarification whether they design and assemble complete units versus supplying subcomponents.
What are typical minimum order quantities (MOQs)?
MOQs vary by supplier and whether the unit is custom or standard; some vendors will build single custom units while production MOQs apply for repeat OEM runs — confirm with the manufacturer.
Which certifications should I ask for?
Request evidence of compliance with any required standards for your industry (NFPA, UL, CE, ATEX, or customer-specific specs) and ask for test records for pressure, leakage and functional checks.
What drives HPU lead times?
Lead times depend on complexity (custom manifolds, control integration), component availability (pumps, motors, valves), and required testing; clarify critical path items when requesting a quote.

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