Quick Take
Industrial motors are the workhorses behind conveyors, pumps, compressors, and machine tools. The hard part is matching horsepower, enclosure, and mounting style to the job without overpaying. These four three-phase AC motors cover a useful range: a 750W gear-reduction motor, a 0.33 HP general-purpose Baldor-Reliance unit, a 56C-frame TEFC motor, and a severe-duty model. Prices span from the low $170s to the low $330s, so the right pick depends more on your application than on a single headline feature.
Price Comparison
| Product | Listed Price | Price Bar |
|---|---|---|
| 1HP Electric Gear Motor (1:30 Reduction) | USD 225.11 | |
| Baldor-Reliance CNM3457 | USD 275.00 | |
| 2 HP General Electric Motor 56C Frame | USD 176.80 | |
| 1800 RPM 5 HP Severe Duty 184T | USD 330.95 |
Decision Matrix
- Choose the 1HP Electric Gear Motor if you need a compact horizontal package with built-in reduction.
- Choose the Baldor-Reliance CNM3457 for a low-horsepower, single-speed application where dust and light moisture are a concern.
- Choose the 2 HP General Electric Motor when you want a 56C-frame motor with inverter-duty capability at the lowest listed price.
- Choose the 5 HP motor if you need the most power here, plus a robust frame for demanding jobs.
Model-by-Model Breakdown
1HP Electric Gear Motor 1:30 Reduction Gear Motor
If your application needs high torque at low speed without a separate gearbox, this 750W gear motor puts the reduction in one horizontal package. The 1:30 ratio means the output shaft turns at a much lower speed than the motor's internal speed, and the aluminum-alloy and steel construction supports a long service life. It's a brushless AC motor that needs no assembly, and the 28mm output shaft gives you a defined connection point. On the downside, the gear ratio is fixed at 1:30, so this unit won't flex to a different reduction; if your machine needs a different ratio, you'd have to look elsewhere. It's not the lowest-cost option in this lineup, either.
Baldor-Reliance CNM3457 3-Phase General-Purpose Industrial AC Electric Motor
This Baldor-Reliance unit is a general-purpose motor with a totally enclosed non-ventilated (TENV) enclosure, which makes it a sensible fit for areas with heavy dust, dirt, and light moisture. It runs at 3450 RPM on 60 Hz and accepts 208-230/460V input, so wiring flexibility is built in. The open-box condition keeps the price at $275.00, which lands in the middle of the price lineup. The trade-off: rated at only 0.33 HP, it's the lowest-power motor in this set, so it won't drive heavy loads or high-torque machines. Use it for lighter, single-speed setups where a sealed enclosure matters more than raw horsepower.
2 HP General Electric Motor 56C Frame
This motor uses a C-face, fan-cooled TEFC enclosure, so it's built for continuous duty in normal industrial settings. It comes with Class F insulation, a 1.15 service factor, and inverter-rated capability, meaning it can work with variable-frequency drives. It also has a removable base and C-face mounting for close-coupled applications. The limitation is that, when run on 50 Hz, the service factor drops to 1.0, so the overload safety margin narrows compared with 60 Hz operation. It's listed at $176.80, which makes it an easy first look when price is the primary concern.
1800 RPM 5 HP Severe Duty Motor
Need the most muscle in this group? This motor is a severe-duty unit with a 184T frame, TEFC/IP55 enclosure, 1.15 service factor, and dual-voltage operation. It's designed to handle 25% overload, and the Class F insulation helps it run cooler in high-heat environments. It suits pumps, compressors, conveyors, and similar rotating equipment. It also rotates bidirectionally, so integration into existing systems is straightforward. The limitation is physical and financial: at 104 lb, the motor is heavy to handle and mount, and it's the highest-priced motor in the lineup.
Final Recommendation by Use Case
- Compact, low-speed torque: Choose the 1HP Electric Gear Motor when you want the reduction built into the motor.
- Dusty, lightly moist environments with modest power: Choose the Baldor-Reliance CNM3457.
- Low-end price pick: Choose the General Electric motor.
- Maximum power and protection: Choose the severe-duty motor.
