The Dayton 1TDR6 is a direct replacement blower motor designed to restore reliable airflow in HVAC and ventilation equipment. Running at 150 CFM and dual-speed 2450/2480 RPM on standard 115V power, it replaces the discontinued Dayton 4C006 and is also catalogued as NBK part number 20516. Ball bearings, Class B insulation, and built-in automatic overload protection make this a dependable long-term replacement.
When a blower motor fails in a furnace, air handler, or ventilation unit, you need a confirmed replacement -- not a guess. The 1TDR6 is spec-matched to the Dayton 4C006, so you get the same CFM output, the same shaft rotation direction, and the same mounting footprint without modification.
Clockwise rotation (viewed from the inlet side), a 3-3/4 in inlet diameter, and a 4-7/16 in x 4-1/16 in flange make fitment straightforward. The squirrel-cage wheel measures 4-1/8 in diameter x 1-7/8 in wide, consistent with the original design. At 6 lbs, it installs without requiring additional support hardware.
Moves 150 cubic feet of air per minute to maintain heating or ventilation performance equal to the original motor specification.
Rated at 2450 RPM on 60 Hz and 2480 RPM on 50 Hz supplies, making it compatible with both North American and international voltage standards at 115V.
Ball bearings reduce friction and heat buildup, extending service life compared to sleeve-bearing motors in continuous-duty blower applications.
Built-in automatic thermal overload protection shuts the motor down if it overheats and resets automatically once it cools, preventing burnout.
The 1TDR6 was developed specifically to replace the Dayton 4C006. If your existing motor carries the 4C006 part number, the 1TDR6 is the correct drop-in unit. Also sold under NBK catalog number 20516.
Class B insulation is rated for continuous operation up to 130 deg C (266 deg F) winding temperature rise above ambient. It is the standard rating for commercial and light-industrial HVAC blower motors and indicates this motor is built for sustained duty cycles, not just occasional use.
The inlet air temperature must not exceed 104 deg F (40 deg C). Exceeding this limit can shorten motor life even with overload protection active. Ensure adequate clearance and airflow around the motor housing during installation.