Electrical Motors & Specialties ESP-OL50EMR2 Fan Motor

The Electrical Motors & Specialties ESP-OL50EMR2 Fan Motor is a heavy-duty, cast iron unit bearing fan motor engineered for the rigorous demands of commercial refrigeration and HVACR service. Built for long-term reliability in evaporator and condenser applications, this 50 Watt unit bearing motor features a robust shaded pole design that ensures consistent performance in high-moisture environments. Operating at 230 Volts and drawing 0.85 Full Load Amps, this single-phase motor delivers a steady 1500 RPM. The CCWLE rotation (Counter-Clockwise Lead End) and 3/8-inch flatted shaft make it a standard choice for technicians replacing OEM motors in walk-in coolers and display cases.

Designed for durability, the EM&S ESP-OL50EMR2 utilizes a 3-25/32" diameter frame and a totally enclosed (TE) housing to protect internal components from airborne contaminants. With a 1.00 service factor and 60 Hz frequency rating, it provides stable torque for 6-inch to 10-inch fan blades. This replacement refrigeration motor is a direct cross-reference for Fasco UB581 and Century/AO Smith 261, offering a rigid base mounting and rear-tapped holes to accommodate various bracket configurations in the field.

• Cast Iron Construction: Provides superior heat dissipation and structural integrity for continuous-duty operation.
• Unit Bearing Design: Features an oversized oil reservoir and specialized lubrication system for extended service intervals.
• High Compatibility: Functions as a drop-in 230V 1500 RPM motor for a wide range of light commercial refrigeration equipment.
• Standard Shaft Dimensions: Equipped with a 3/8" x 1-1/2" flatted shaft for secure fan blade attachment.

Common Questions

What is the correct rotation for the ESP-OL50EMR2?
This motor is rated for CCWLE (Counter-Clockwise Lead End), which corresponds to CWSE (Clockwise Shaft End). Always verify the airflow direction of the existing fan blade before installation.

Can this motor be mounted in any orientation?
While unit bearing motors are highly versatile, this specific shaded pole model is optimized for horizontal or shaft-up mounting in air-over applications to ensure proper cooling and lubrication flow.

Is this motor compatible with 50Hz power systems?
Specifications indicate this is primarily a 60 Hz motor. For 50/60 Hz universal applications, efficiency and RPM may vary; consult the nameplate to ensure amperage limits are not exceeded.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.