Buying an industrial motor comes down to three non-negotiable details: what voltage and phase your building supplies, what frame your equipment is built around, and how much horsepower the driven load actually needs. The four motors here split into two useful groups: 184T motors and 56C motors. The first group offers real power for pumps, compressors, and conveyors; the second offers a smaller, more budget-conscious C-face package. Prices range from $175.10 to $455, so the wrong choice is not just a wiring headache-it can also cost several hundred dollars more than necessary.
Quick Take
If three-phase power is available and the job needs the full-size 184T package, the 1800 RPM Severe Duty motor is the strongest fit for dusty and wet conditions. If your building only has single-phase power and you are replacing a compressor motor, the Single Phase Air Compressor 184T motor is the matching choice. For C-face equipment, either 56C motor gives you a 3-phase, TEFC, fan-cooled package with Class F insulation; the one with the lower price is the easier budget call.
Price Comparison
Prices are straightforward; choose the motor that fits your frame and phase, not just the cheapest number.
| Motor | Listed Price | Price Bar | Quick Spec |
|---|---|---|---|
| 1800 RPM 5 HP Electric Motor 184T Frame TEFC 230/460V Severe Duty 3 Phase | USD 330.95 | 5 HP, 3-phase, 184T TEFC | |
| 1 Piece 5 HP Single Phase Industrial Air Compressor Electric Motor 184T Frame | USD 455.00 | 5 HP, single-phase, 184T ODTF | |
| 2 HP General Electric Motor 3 Phase 56C Frame 1800 RPM TEFC 230 / 460 Volt New | USD 176.80 | 2 HP, 3-phase, 56C TEFC | |
| 3 Phase 56C Frame 1800 RPM TEFC 230 / 460 Volt 2 HP General Electric Motor New | USD 175.10 | 2 HP, 3-phase, 56C TEFC |
Decision Matrix
| Use case | Motor to start with | Why |
|---|---|---|
| 184T frame, three-phase power | 1800 RPM 5 HP Severe Duty 184T | Severe-duty design with TEFC/IP55 protection |
| 184T frame, single-phase supply | 5 HP Single Phase Air Compressor 184T | Single-phase 208-230V operation and compressor focus |
| 56C C-face, small-drive package | 3 Phase 56C 2 HP Motor | Lowest-priced motor with TEFC C-face format |
| 56C C-face, prefer the other 2 HP option | 2 HP General Electric 56C Motor | Same C-face TEFC package at a slightly higher price |
Product Notes
1800 RPM 5 HP Electric Motor 184T Frame TEFC 230/460V Severe Duty 3 Phase
This is the heavy lifter of the group. The 184T frame gives you a full-size three-phase platform, while the TEFC/IP55 enclosure keeps dust and water spray away from the windings. A 1.15 service factor means it can handle brief overloads, and the dual 230/460V wiring makes it flexible for different shop voltages. The keyed shaft and 104 lb weight reinforce the severe-duty character. The limitation is phase: it needs a three-phase supply, so it is not a drop-in replacement for a single-phase motor. If your building has three-phase and the load needs the bigger output, this is the unit to compare against the single-phase compressor motor.
1 Piece 5 HP Single Phase Industrial Air Compressor Electric Motor 184T Frame
The value of this motor is in its phase. It is the only single-phase option here, and the 184T frame is sized for compressor duty. The steel construction, direct-replacement fitment, and 2-year manufacturer warranty make it a service-friendly choice for someone swapping out a failed compressor motor. The trade-off is enclosure: it uses an ODTF open drip-proof design, so it is less protected from dust and water than a TEFC motor. It also carries the highest price in this comparison, so it is worth choosing only when single-phase power is actually what the job demands.
2 HP General Electric Motor 3 Phase 56C Frame 1800 RPM TEFC 230 / 460 Volt New
The 56C package in this group is the C-face option for gearboxes, blowers, and small machinery. It includes a removable base, Class F insulation, and a 1.15 service factor, and it is rated for inverter duty, which makes it a good match for VFD-driven equipment. The 56C frame is much smaller than the 184T motors, so it suits installations where space is tight. Its limitation is output: even with the TEFC enclosure and three-phase flexibility, this motor cannot move the same loads as the larger 184T motors. If your machine's rating is lower, this size keeps the initial investment down.
3 Phase 56C Frame 1800 RPM TEFC 230 / 460 Volt 2 HP General Electric Motor New
At the bottom of the price range, this motor shares the same essential 56C three-phase TEFC format as the other General Electric motor, with a C-face removable base, keyed shaft, and Class F insulation. The keyed shaft matters if your existing coupling or pulley needs a positive drive connection. The limitation is straightforward: it is a three-phase motor, so it will not run on a single-phase circuit, and its output is smaller than the 184T motors. If your equipment was designed for a 56C frame and a C-face mount, this is the lowest-cost way to get that specification.
Final Recommendation
If three-phase power is available and the load needs the full-size 184T motor, choose the 1800 RPM 5 HP Severe Duty motor. If only single-phase power is available and the compressor needs a 184T motor, choose the 5 HP Single Phase Air Compressor motor. If your machine uses a 56C C-face mount and the smaller output is enough, start with the lower-priced 3 Phase 56C motor; the other General Electric 56C motor is the backup when you prefer that option.
