MRO Field Guide

Hydraulic Power Unit vs Hydraulic Motor: Which Hydraulics Pneumatics Part Should You Buy?

Choosing between a single-phase hydraulic power unit and a Char-Lynn Eaton 104-1065 hydraulic motor? This head-to-head explains which part belongs in your hydraulics pneumatics setup and when each one is the right buy.

Last updated Aug 17, 2026

Choosing between a hydraulic power unit and a hydraulic motor in the hydraulics pneumatics category comes down to one question: do you need to make pressure or use pressure? These two parts look similar at first glance, but they work on opposite sides of a hydraulic system. The power unit sends fluid; the hydraulic motor spins a shaft. Pick the wrong one and the part won't do the job your machine is asking for.

Quick verdict

If your equipment needs an electric-driven unit to run a lift cylinder, go with the Single Phase Hydraulic Power Unit. If your machine already has hydraulic flow and you need a rotary motor to replace a Char-Lynn Eaton 104-1065, choose the Hydraulic Motor for Char-Lynn Eaton 104-1065.

At a glance

SpecHydraulic Power UnitHydraulic Motor
Listed priceUSD 221.83USD 228.52
What it doesPumps fluid to operate a cylinderConverts hydraulic flow into shaft rotation
Power source2HP, 220V single-phase electric motorHydraulic flow from an external pump
Key specs3450RPM, 4 Gal reservoir, 2950psi relief195cc displacement, 625N·m torque, 577RPM
Best matched toSingle-acting lift or gravity-down cylinderChar-Lynn Eaton 104-1065 applications

Where each product wins

The hydraulic power unit wins when you need a complete pressure source. It comes as one assembled package, so you are not chasing down components separately.

The hydraulic motor wins when rotary output is the missing piece. It is the part that produces shaft rotation for Char-Lynn Eaton 104-1065 applications.

Product notes

Single Phase Hydraulic Power Unit

3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP Motor

This power unit arrives fully assembled, with simple wiring, operating instructions, and a 1-year manufacturer warranty. For someone who wants a complete pressure source without sourcing components separately, that convenience is the main draw. The limitation is the pump's single-acting design: it pushes the cylinder out and needs gravity to bring the load back down. That makes it a natural fit for a vehicle lift or a gravity-down table, but not for a double-acting cylinder that must be pushed in both directions. It also runs on 220V AC, so your shop's power needs to match that.

Hydraulic Motor for Char-Lynn Eaton 104-1065

Hydraulic Motor New Cast Iron Motor For Char-Lynn Eaton 104-1065 Hydraulic Motor

This cast iron hydraulic motor is a direct replacement for Char-Lynn Eaton 104-1065 applications. It includes the motor and a key lock, so you have the hardware needed to finish the job. The reason to choose it is the torque output: it delivers 625N·m of torque at 577RPM, which is what a machine like this expects. The limitation is that it is not a self-contained system. You will need an existing hydraulic power source and a machine that is already set up for Char-Lynn Eaton 104-1065. Without that, you are buying a component that needs a specific application.

Final choice by use case

  • If a power unit is what your system lacks: choose the Single Phase Hydraulic Power Unit and its 4-gallon reservoir.
  • If a Char-Lynn Eaton 104-1065 replacement is what you need: choose the Hydraulic Motor for Char-Lynn Eaton 104-1065.
Products in this article
3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP MotorUSD 221.83View on eBayHydraulic Motor New Cast Iron MotorUSD 228.52View on eBay
3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP MotorUSD 221.83View on eBayHydraulic Motor New Cast Iron MotorUSD 228.52View on eBay

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