Choosing an industrial motor for a pump, compressor, conveyor, or other three-phase equipment means balancing power output, frame size, and how the motor physically connects to your machine. The two motors here sit at very different ends of that decision. One is a compact 2 HP 56C-frame unit with C-face mounting; the other is a large 5 HP severe-duty motor on an 184T frame. Prices also separate them-the 2 HP model is listed at $175.10, while the 5 HP model is $330.95. That's a $155.85 difference, and it buys significantly more torque and a heavier-duty package. But the smaller motor has its own advantages: it's lighter, takes up less space, and offers a removable base plus C-face connections for close coupling. Let's sort out which one fits your shop.
Quick verdict: If you need to drive a demanding 5 HP load like a large pump or compressor, the 5 HP 184T severe-duty motor is the clear choice. It handles a 25% overload with a 1.15 service factor, comes in a TEFC/IP55 enclosure, and supports both 50/60 Hz input. If your machine is built around a 56C frame and a smaller 2 HP load, the 2 HP 56C motor is the right fit, especially where C-face mounting and premium efficiency/inverter-rated operation are useful.
| Feature | 5 HP 184T TEFC Motor | 2 HP 56C TEFC Motor |
|---|---|---|
| Listed price | $330.95 | $175.10 |
| Horsepower | 5 HP | 2 HP |
| Frame | 184T | 56C |
| Enclosure | TEFC / IP55 | TEFC |
| Voltage | 230/460V | 230/460V |
| Frequency | 50/60 Hz | 60 Hz |
| Extra highlights | Severe duty, 25% overload capacity, 1-1/8" keyed shaft | C-face removable base, premium efficiency, inverter rated |
Where each product wins:
- Choose the 5 HP 184T when you need real power and rugged construction for continuous heavy loads. The severe-duty design includes a TEFC/IP55 enclosure that resists dust and water, and the 1.15 service factor lets it handle a 25% overload when the application calls for it. The 184T frame gives you a large, stable mounting footprint.
- Choose the 2 HP 56C when your application is sized for 2 HP and needs C-face mounting. The removable base lets it sit on a flat surface or bolt to a gearbox or pump, while the premium efficiency and inverter-rated design make it a flexible addition to variable-speed setups.
5 HP 184T Severe-Duty Motor
This motor is built for demanding jobs. The severe-duty construction includes a TEFC/IP55 enclosure that resists dust and water, and the 1.15 service factor lets it handle 25% overload when the application calls for it. The 230/460V dual-voltage wiring works with common industrial supply systems, and the 50/60 Hz rating means it can run on either frequency. At $330.95, it costs more than the 2 HP motor, but you're paying for extra power and a heavier frame. The limitation is size and weight: at 104 lbs and with a 184T frame, it needs a sturdy mounting surface and enough clearance. If your equipment is built around a smaller 56C frame, this motor won't physically fit without an adapter.
2 HP 56C TEFC Motor
The 2 HP motor is a more compact solution that still gives you three-phase reliability. Its 56C frame with C-face mounting and removable base makes it easy to integrate with gearboxes, pumps, and other close-coupled equipment, and the premium efficiency rating helps keep operating costs down. It's also inverter rated, so it can work in variable-speed applications where the drive changes frequency. The listed price of $175.10 makes it the lower-cost option in this comparison. The trade-off is power: at 2 HP, it's simply not in the same class for heavy loads that need 5 HP. The enclosure is TEFC but not specifically described as IP55, and the frequency rating is 60 Hz only, so it's less flexible if you need 50 Hz operation. For a tight spot or a smaller machine, it's a solid match.
Final choice by use case:
- If you're running a large pump, compressor, or conveyor that needs 5 HP and a 184T-frame motor, go with the 5 HP 184T severe-duty motor.
- If you have a small pump, gearmotor, or machine built around a 56C face and a 2 HP load, the 2 HP 56C TEFC motor is the right pick.
- If you want to keep the upfront cost lower and your power needs are modest, the 2 HP motor saves $155.85. But if the machine truly requires 5 HP, the larger motor is worth the extra expense.
