Choosing an industrial motor is rarely just about horsepower. You also have to think about your power supply, whether you need a speed reduction stage, and how specialized the motor is for the work it will do. The two options here take different paths: one is a three-phase motor package, and the other is a dedicated air compressor motor. Which one you should buy comes down to the electrical service you have and the job you are wiring it for. The difference in listed price is also significant, so the decision affects both performance and budget.
Quick Verdict
The Baldor-Reliance VEM3558T + Dodge Quantis is the fuller package at $700.00, while the single-phase air compressor motor is the lower-cost, compressor-specific pick at $449.99. Choose based on whether you need a matched drive package or a focused compressor motor. If you already have the right power supply and need both rotation and speed reduction, the combo makes sense. If your next task is compressor replacement, the standalone motor is the simpler choice.
At a Glance
| Feature | Baldor-Reliance VEM3558T + Dodge Quantis | 5HP 184T Single-Phase Air Compressor Motor |
|---|---|---|
| Listed price | $700.00 | $449.99 |
| Power/use | Three-phase; motor + reducer package | Single-phase; air compressor |
| Voltage rating | 208-230/460 V | 208-230 V |
| Enclosure | TEFC | TEFC |
| Full-load amps | 5.6-5.2/2.6 A | 28.5-27 A |
| Included components | Motor + Dodge Quantis speed reducer | Standalone motor |
Where the Baldor-Reliance Combo Wins
The biggest advantage is completeness. The listing pairs a Baldor-Reliance Super-E NEMA C-Face motor with Class F insulation and a Dodge Quantis right-angle helical-bevel speed reducer. If your application calls for a right-angle gear drive, that combination saves you from sourcing a separate gearbox. It is also listed as new open box, so you are getting a drive package rather than a bare shaft motor. That packaging can also simplify your parts list and reduce the time spent matching a motor to a gearbox.
Where the Air Compressor Motor Wins
This motor wins on focus. It is designed for multiple types of single-stage and two-stage air compressors, with IP54 protection and a rolled steel shell. For compressor duty, that makes it a purpose-built option instead of a general-purpose motor pressed into service. It is also listed as new, which is a straightforward condition to plan around. If your project is a compressor motor replacement, this gives you a component that already matches the intended workload.
Product Notes
Baldor-Reliance VEM3558T Industrial Electric Motor + Dodge Quantis Speed Reducer

The strength of this listing is the completeness of the drive package. You get a Baldor-Reliance Super-E NEMA C-Face motor with Class F insulation, plus a Dodge Quantis right-angle helical-bevel unit at a 5.65:1 ratio and 1019 in-lbs of max output torque. For an industrial motor setup that needs right-angle reduction, the motor and gearbox arrive as one matched pair, which can simplify sourcing compared to tracking down components individually. The unit is listed as new but open box, so the open-box condition is a practical detail to weigh before purchase. If that fits the application and you need both rotation and reduction, this is the more complete option.
5HP 1750RPM Air Compressor Electric Motor 184T Single Phase TEFC 208-230V

This motor is a direct answer to compressor duty. It is designed for multiple types of single-stage and two-stage air compressors, and its IP54 rating and rolled steel shell line up with that job. For someone replacing a compressor motor or building a compressor setup, having a motor already built for that workload takes the guesswork out of the decision. The full-load amperage of 28.5-27 A is a big number to plan for. If your air compressor can use this motor, this is the practical, purpose-built pick. It is listed as new, so you are working with a fresh unit.
Final Choice by Use Case
Choose the Baldor-Reliance VEM3558T + Dodge Quantis when the job needs both a motor and a matched reduction package and the listed voltage range fits your supply. Choose the air compressor motor when you are powering an air compressor and want a purpose-built motor. If your shop has a limited parts budget, the standalone motor leaves more room in that budget; if your main concern is a complete drive kit, the combo is the one to build around.