Midco International 843743 Motor

The Midco International 843743 Motor is a high-performance, industrial-grade solution designed for demanding HVACR burner motor applications, including the Incinomite J121DS series. Engineered for reliability in high-cycle environments, this 1/6 HP single-phase motor operates at a synchronous speed of 3450 RPM, providing the consistent torque required for fan and blower assemblies. The TEFC (Totally Enclosed Fan Cooled) or TENV housing options ensure internal components remain protected from dust and airborne contaminants, while the thermally protected design prevents winding failure during over-amp conditions.

For versatile field integration, this unit supports a 115/230V dual voltage configuration at 50/60Hz, allowing technicians to match local power supply requirements without needing multiple SKUs. The Midco 843743 replacement motor is a critical component for maintaining proper combustion airflow and system static pressure. Each unit is precision-balanced to minimize vibration, extending the service life of both the motor and the burner housing. As a veteran-preferred part, it meets UL-recognized and CSA-certified standards for professional installations.

• Dual Voltage Versatility: Seamlessly switches between 115V and 230V to accommodate different electrical infrastructures.
• High-Speed Efficiency: Delivers 3450 RPM performance, optimized for burner fan and blower belt-drive or direct-drive systems.
• Industrial Durability: Features a rugged housing and thermally protected windings to handle the thermal stresses of industrial heating.
• Reliable Starting Torque: Designed with high-quality centrifugal switches to ensure reliable ignition support and airflow at every startup.

What are the symptoms of a failing Midco 843743 motor?
Common indicators include a humming sound without shaft rotation (often a failed start switch or capacitor), excessive bearing noise, or frequent tripping of the thermal overload protector due to high amperage draw.

Is the 843743 motor compatible with both 50Hz and 60Hz power?
Yes, this motor is rated for 50/60Hz operation, making it suitable for a wide range of international and domestic power grids when matched with the correct voltage tap.

Can this motor be used on other burner brands?
While primarily used on Midco Incinomite J121DS burners, it can serve as a replacement for other equipment requiring a 1/6 HP, 3450 RPM motor with identical frame and shaft dimensions. Always verify the shaft diameter and mounting bolt pattern before installation.

This item is not eligible for free shipping.

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.