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Dayton 2M139 universal AC DC motor unfinished face mount

Dayton

Dayton 2M139 Universal AC/DC Motor 1/5 HP 10000 RPM 115V

SKU CH-4M4X-T7R9E

Universal AC/DC motor delivers 1/5 hp at 10,000 rpm on 115 V single-phase power

  • Universal AC/DC operation suits varied power sources
  • 1/5 HP output delivers reliable torque
  • 10000 RPM nameplate speed enables high-speed tasks
  • 115V AC input fits standard supply
  • 5/16 in shaft diameter matches common couplings

Application Scope

The Dayton 2M139 is a universal AC/DC motor rated at 1/5 HP with a nameplate speed of 10,000 RPM. It operates on 115V AC single-phase power at 60 Hz and draws 2.9 A at full load. The motor suits equipment requiring a compact, single-speed drive with a 5/16 in. shaft and face-mount configuration.

Thermals and Power Draw

The motor carries an insulation class F rating and a maximum ambient temperature of 40 degrees C. No thermal protection is fitted, so external safeguards are required for sustained operation. A service factor of 1.0 means the unit should not be loaded beyond its nameplate rating. The open enclosure design allows airflow but offers no ingress protection.

Upgrade Context

This motor replaces an equivalent 1/5 HP universal motor with matching shaft diameter, rotation (CCWSE), and face-mount pattern. The jump is worth it when the existing unit has failed or when a new build needs a 115V-only motor that is explicitly not usable at 200V or 208V. Buyers needing dual-voltage capability or built-in thermal overload should look elsewhere.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $109.99
Pricier than about 71% of the 1,135 comparable items (median $54.99).

Specifications

Product
Brand nameDAYTON

Questions about this item

How do I wire the Dayton 2M139 motor for 115 V AC and which rotation will I get?

Connect the supply to the two leads for 115 V AC 60 Hz single phase; the nameplate states CCWSE rotation when viewed from the shaft end.

What brush maintenance does the universal motor require over time?

As a universal AC/DC design it uses carbon brushes; inspect them periodically and replace when worn to maintain the 2.9 A full-load rating.

At what temperature does thermal protection activate during continuous duty?

The motor has no built-in thermal protection and is rated for a maximum ambient of 40 °C; sustained operation above that temperature risks insulation failure.

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