
Midco International 646400 Blower Motor
The Midco International 646400 Blower Motor is a critical component for maintaining precise combustion air requirements in power gas burners. This 115V blower motor is the direct replacement for 843512, engineered specifically for high-demand burner applications. Operating at a 1350/1000 RPM dual-speed range, it provides the necessary static pressure to stabilize the flame profile across various firing rates. With a low current draw of 1.38/1.2A and 50/60 Hz compatibility, this motor is optimized for energy efficiency without sacrificing torque. The inclusion of sealed ball bearings ensures minimal frictional resistance and long-term mechanical reliability in high-heat environments. Whether you are servicing a J81A-3 or a J120-3, this thermally protected motor prevents winding failure during heavy duty cycles, ensuring the burner assembly operates within OEM specifications.
Technical Benefits for Contractors
- Direct OEM Compatibility: Serves as the verified 646400 replacement motor for Midco burner models J81A-3, J121A-3, J83-DS, J40-DS, J80-DS, J80-3, and J120-3.
- Enhanced Durability: Features permanently lubricated sealed ball bearings and internal thermal overload protection to withstand the rigors of commercial boiler rooms.
- Flexible Application: The 115V 1350/1000 RPM specification allows for precise airflow tuning to achieve optimal CO2 levels and combustion efficiency.
- Industry Standards: This UL-recognized and CSA-certified burner motor ensures compliance with local mechanical codes and safety regulations.
Common Questions
Is this the correct motor for the Midco J Series burners?
Yes, the 646400 is the standard replacement blower motor for several J Series models. Always verify the shaft diameter and mounting flange configuration against your existing 843512 motor to ensure a drop-in fit.
Can this motor handle both 50Hz and 60Hz power supplies?
This motor is rated for 50/60 Hz frequency, making it suitable for a wide range of electrical environments while maintaining stable 1350/1000 RPM performance.
Does this motor require external lubrication?
No, the sealed ball bearing design is permanently lubricated, reducing maintenance requirements and preventing oil-related contamination within the burner housing.
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.
Original: $540.80
-65%$540.80
$189.28Midco International 646400 Blower Motor
The Midco International 646400 Blower Motor is a critical component for maintaining precise combustion air requirements in power gas burners. This 115V blower motor is the direct replacement for 843512, engineered specifically for high-demand burner applications. Operating at a 1350/1000 RPM dual-speed range, it provides the necessary static pressure to stabilize the flame profile across various firing rates. With a low current draw of 1.38/1.2A and 50/60 Hz compatibility, this motor is optimized for energy efficiency without sacrificing torque. The inclusion of sealed ball bearings ensures minimal frictional resistance and long-term mechanical reliability in high-heat environments. Whether you are servicing a J81A-3 or a J120-3, this thermally protected motor prevents winding failure during heavy duty cycles, ensuring the burner assembly operates within OEM specifications.
Technical Benefits for Contractors
- Direct OEM Compatibility: Serves as the verified 646400 replacement motor for Midco burner models J81A-3, J121A-3, J83-DS, J40-DS, J80-DS, J80-3, and J120-3.
- Enhanced Durability: Features permanently lubricated sealed ball bearings and internal thermal overload protection to withstand the rigors of commercial boiler rooms.
- Flexible Application: The 115V 1350/1000 RPM specification allows for precise airflow tuning to achieve optimal CO2 levels and combustion efficiency.
- Industry Standards: This UL-recognized and CSA-certified burner motor ensures compliance with local mechanical codes and safety regulations.
Common Questions
Is this the correct motor for the Midco J Series burners?
Yes, the 646400 is the standard replacement blower motor for several J Series models. Always verify the shaft diameter and mounting flange configuration against your existing 843512 motor to ensure a drop-in fit.
Can this motor handle both 50Hz and 60Hz power supplies?
This motor is rated for 50/60 Hz frequency, making it suitable for a wide range of electrical environments while maintaining stable 1350/1000 RPM performance.
Does this motor require external lubrication?
No, the sealed ball bearing design is permanently lubricated, reducing maintenance requirements and preventing oil-related contamination within the burner housing.
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.
Product Information
Product Information
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Description
The Midco International 646400 Blower Motor is a critical component for maintaining precise combustion air requirements in power gas burners. This 115V blower motor is the direct replacement for 843512, engineered specifically for high-demand burner applications. Operating at a 1350/1000 RPM dual-speed range, it provides the necessary static pressure to stabilize the flame profile across various firing rates. With a low current draw of 1.38/1.2A and 50/60 Hz compatibility, this motor is optimized for energy efficiency without sacrificing torque. The inclusion of sealed ball bearings ensures minimal frictional resistance and long-term mechanical reliability in high-heat environments. Whether you are servicing a J81A-3 or a J120-3, this thermally protected motor prevents winding failure during heavy duty cycles, ensuring the burner assembly operates within OEM specifications.
Technical Benefits for Contractors
- Direct OEM Compatibility: Serves as the verified 646400 replacement motor for Midco burner models J81A-3, J121A-3, J83-DS, J40-DS, J80-DS, J80-3, and J120-3.
- Enhanced Durability: Features permanently lubricated sealed ball bearings and internal thermal overload protection to withstand the rigors of commercial boiler rooms.
- Flexible Application: The 115V 1350/1000 RPM specification allows for precise airflow tuning to achieve optimal CO2 levels and combustion efficiency.
- Industry Standards: This UL-recognized and CSA-certified burner motor ensures compliance with local mechanical codes and safety regulations.
Common Questions
Is this the correct motor for the Midco J Series burners?
Yes, the 646400 is the standard replacement blower motor for several J Series models. Always verify the shaft diameter and mounting flange configuration against your existing 843512 motor to ensure a drop-in fit.
Can this motor handle both 50Hz and 60Hz power supplies?
This motor is rated for 50/60 Hz frequency, making it suitable for a wide range of electrical environments while maintaining stable 1350/1000 RPM performance.
Does this motor require external lubrication?
No, the sealed ball bearing design is permanently lubricated, reducing maintenance requirements and preventing oil-related contamination within the burner housing.
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.












