A direct-fit replacement for the Fasco 7063-7161 blower motor, the NBK Parts 20751 delivers 227 CFM of airflow at dual speeds with a permanent split capacitor (PSC) motor built for continuous-duty HVAC and furnace blower applications. Ball bearings, IP20 protection, and automatic overload make this a reliable long-term swap.
The NBK Parts 20751 is engineered as a form, fit, and function replacement for the Fasco model 7063-7161 blower motor -- also cross-referenced as the Dayton 1TDV3. If your existing motor is failing, running hot, or has seized bearings, this unit bolts directly into the original housing without modification.
The 8mm shaft diameter, 4-7/16" x 5" flange, and clockwise rotation match the original spec exactly. Overall housing dimensions of 9-3/8" H x 8-5/8" W x 8-5/8" D ensure the unit fits the same cabinet footprint as the motor it replaces.
Dual-speed operation at 1430 RPM (50 Hz) and 1700 RPM (60 Hz) delivers consistent, demand-matched airflow for heating and ventilation systems.
Precision ball bearings provide longer service life and quieter operation compared to sleeve-bearing designs, especially in continuous-duty installations.
The permanent split capacitor motor offers high efficiency and reliable torque without a starting relay, reducing system complexity and failure points.
Built-in thermal overload protection automatically cuts power if the motor overheats, protecting the unit and the surrounding equipment.
This is a single-phase, permanent split capacitor (PSC) motor rated for continuous duty at 115V, 50/60 Hz. The PSC design is standard in residential and light-commercial HVAC blower assemblies because it starts and runs without an external relay, draws low amperage (0.60A at low speed, 0.58A at high speed), and maintains consistent torque across both speed settings.
Class B insulation indicates a thermal rating suitable for winding temperatures up to 130 deg C (266 deg F), appropriate for blower applications where the motor is exposed to recirculated warm air.
The integrated or mating blower wheel uses a 5-1/8" diameter x 3-1/4" wide squirrel cage configuration. The outlet opening measures 3-3/8" H x 3-3/4" W, which aligns with standard duct collars used in the original Fasco 7063-7161 applications. Always confirm your existing wheel bore matches the 8mm motor shaft before ordering.
The motor is rated for a maximum ambient temperature of 104 deg F (40 deg C) and a minimum ambient of -10 deg C (14 deg F). Maximum inlet air temperature is 104 deg F -- do not use this motor in applications where it will be exposed to sustained airflow above that threshold. IP20 protection guards against solid objects larger than 12mm but is not moisture-rated; install in dry interior locations only.
This motor is commonly found in forced-air furnace blower assemblies, air handler units, and HVAC fan coil cabinets where the Fasco 7063-7161 or Dayton 1TDV3 was originally installed. It is also used in some RV furnace and ducted heating system blower assemblies that share this motor family.