Dayton 3M328A Shaded Pole AC Gear Motor 13.5 RPM 200 In-Lb 1/20 HP 115V 60Hz

Dayton 3M328A Shaded Pole AC Gear Motor 13.5 RPM 200 In-Lb 1/20 HP 115V 60Hz

The Dayton 3M328A is a single-phase shaded pole AC gear motor rated for continuous-duty operation at an exceptionally low output speed of 13.5 RPM with a full-load torque of 200 inch-pounds. It integrates a shaded pole induction motor with an integral gearbox in a compact, direct-coupled assembly. This unit came out of a chemical mixer application and one example remains mounted on its original corrosion-resistant base.

Specifications & What's Included

• Model: Dayton 3M328A
• Internal Motor Model: 7163-2585 (Type 63)
• Motor Type: Shaded Pole AC Gear Motor
• Voltage: 115V AC
• Frequency: 60 Hz
• Phase: Single Phase
• Horsepower: 1/20 HP
• Full Load Speed: 13.5 RPM
• Full Load Torque: 200 In-Lbs
• Full Load Current: 1.6 A
• Duty: Continuous (CONT.)
• Insulation Class: B
• Service Factor: 1.0
• Output (Power) Shaft: 5/8 in (0.625 in) diameter × 1.0 in long
• Fan Shaft: 5/16 in (0.3125 in) diameter × 1.0 in long
• Wiring: Lead wire with 3-pin circular connector
• Manufactured by: Dayton Electric Mfg. Co., Niles, Illinois, USA
• One unit available mounted on corrosion-resistant base; one unit available without base

Applications

Shaded pole gear motors like the Dayton 3M328A are designed for applications requiring very low shaft speeds and high torque from a simple, self-contained AC drive with no external speed controller needed. The shaded pole design is among the simplest and most reliable AC motor configurations — it has no brushes, no start capacitor, and no centrifugal switch, making it well-suited to unattended continuous-duty service. At 13.5 RPM and 200 in-lb of torque, this motor is used in slow-speed mixing, agitating, conveying, valve actuation, turntable drives, display rotators, and industrial process equipment where a steady, low-speed output is required. Its previous service in a chemical mixer highlights its suitability for harsh or chemically aggressive environments, particularly when paired with a corrosion-resistant mounting base as shown. Dayton gear motors of this type are a long-running staple of the Dayton/Grainger catalog and remain a standard solution for OEM and replacement slow-speed drive applications across food processing, laboratory, and light industrial settings.