Marathon
Marathon Y318 - 20 HP, TEFC, Frame 256TZ
Model: Y318
Marathon Y318 motor — 20 HP, 1-phase, 230/460 V, 1800 RPM, 256TZ frame, TEFC, 93.0% efficiency.
Technical Specifications
| Horsepower (HP) | 20 |
| Frame Size | 256TZ |
| Enclosure | TEFC |
| Full Load Speed (RPM) | 1800 |
| Voltage | 230/460 |
| Phase | 1 |
| Full Load Amps (A) | 48.5/24.3 |
| Weight (lbs) | 384 |
| Category | Definite Purpose |
| Electrical Type | AC Induction |
| Rotation | CW/CCW |
| Frequency | 60 |
| Efficiency (%) | 93.0 |
| Shaft Diameter | 1.625 |
| Shaft Diameter Source | NEMA MG-1 frame table |
| Mounting Type | Foot Mounted |
| Mounting Type Source | Marathon 2026 Catalog p.92 |
| Duty Type | General Purpose |
Manufacturer
Marathon
A Regal Rexnord brand manufacturing industrial-grade electric motors. Known for Blue Chip XRI, Black Max, and severe duty product lines.
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