Hydraulic and pneumatic systems force you to choose between very different parts: a gear pump, a wheel motor, or a complete power unit. The four options here cover that range, and the most useful way to start is with one basic question: what, exactly, needs to move oil? Before comparing specs, decide whether you are replacing a pump, adding a wheel motor, or putting together a self-contained unit. The table below shows the price spread at a glance.
Quick take
If you want a ready-to-run electric package, the 3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP Motor is the only complete unit in this set. If you are sourcing a gear pump, the two Dynamic Fluid Components GP-F20 pumps are both new and price-matched, so the choice comes down to pump specs. If you need a wheel motor, the BMER-2-200-WS-T4-S-R is the one to review.
Listed price comparison
| Product | Listed price | Price bar | Distinguishing detail |
|---|---|---|---|
| Dynamic Fluid Components BMER-2-200-WS-T4-S-R Hydraulic Wheel Motor 11.96 cu in | USD 249.99 | Used; 11.96 cu in; wheel hub included | |
| Dynamic Fluid Components GP-F20-12-P-C Hydraulic Gear Pump (New | USD 191.62 | New; 0.73 displacement; clockwise rotation; 3650 psi max | |
| Dynamic Fluid Components GP-F20-08-P1-A Hydraulic Gear Pump (New | USD 191.62 | New; 0.48 displacement; counter-clockwise rotation; 3650 psi max | |
| 3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP Motor | USD 221.83 | New; 2 HP / 2.2 kW; 4-gal reservoir; 2950 psi relief |
The bar length matches the listed price across these four components.
Decision matrix
| If your project is... | The starting point is... |
|---|---|
| Adding a hydraulic wheel motor | BMER-2-200-WS-T4-S-R |
| Buying a gear pump separately | Compare GP-F20-12-P-C and GP-F20-08-P1-A |
| Starting with a complete power unit | 3450RPM Single Phase Hydraulic Power Unit |
Product notes
Dynamic Fluid Components BMER-2-200-WS-T4-S-R Hydraulic Wheel Motor 11.96 cu in
This is the only used item here and the only wheel motor. It is in good used condition after being pulled from working prototype equipment; the wheel hub is included. The 11.96 cu in displacement gives you a clear sizing marker. If your hydraulic layout needs a wheel motor rather than a pump, this is the one that points in that direction. The limitation is the used condition: if you need a brand-new component, this unit does not satisfy that requirement.
Dynamic Fluid Components GP-F20-12-P-C Hydraulic Gear Pump (New
This gear pump is price-matched with its smaller sibling, and the model number distinguishes it clearly. The GP-F20-12-P-C is a hydraulic gear pump from the GP-F20 series, with 0.73 displacement, clockwise rotation, a 5/8-inch straight drive shaft, and SAE-12 inlet / SAE-10 outlet ports. Choose it if you want the larger displacement of the two gear pumps. The concrete limitation is that it is a clockwise-rotation model, so you will want to compare that direction with what your setup already uses.
Dynamic Fluid Components GP-F20-08-P1-A Hydraulic Gear Pump (New
The other Dynamic gear pump, the GP-F20-08-P1-A, is the lower-displacement member of the GP-F20 pair in this comparison. If you are comparing it with the GP-F20-12-P-C, displacement is the main difference. It offers 0.48 displacement and counter-clockwise rotation, and it includes a 3/4-inch straight drive shaft. Pick this pump if your application needs the smaller displacement option. The concrete limitation is its smaller 0.48 displacement, which is lower than the 0.73 version; keep that in mind when sizing your flow.
3450RPM Single Phase Hydraulic Power Unit 4Gal 2HP Motor
This power unit combines a 2 HP / 2.2 kW motor with a 16-quart (4-gallon) reservoir, spins at 3450 rpm, and carries a 2950 psi relief setting. It is designed as a single-acting unit for vehicle-lift and gravity-down use, and it carries a 1-year manufacturer warranty. That makes it a different kind of purchase from the bare gear pumps in this group. Choose it if you want a fully assembled power unit rather than piecing together a pump and motor. The concrete limitation is its single-acting, gravity-down design.
Final recommendation
For a gear pump, compare the GP-F20-12-P-C and GP-F20-08-P1-A to match the output your setup needs. For a ready-to-run electric setup, choose the 3450RPM Single Phase Hydraulic Power Unit. For a wheel motor, the Dynamic Fluid Components BMER-2-200-WS-T4-S-R is the one to compare.
