Direct Drive Fan and Blower Motor, 3/4 HP, 115V

Contractor-Grade Performance – 3/4 HP U.S. Motors 8904 Direct Drive Blower Motor

The U.S. Motors 8904 is a 3/4 HP direct drive fan and blower motor engineered for HVAC applications requiring consistent air movement and dependable duty cycles. With a 1075 RPM operating speed, this motor is optimized for air handling units, furnaces, and air conditioners utilizing a 48-frame platform.

Its split capacitor design supports energy-efficient operation, while thermal overload protection and continuous-duty capabilities ensure reliable service in demanding mechanical environments. Designed for ease of integration into standard band, hub, or stud-mounted assemblies, this motor delivers proven performance and field-tested reliability.

Contractor Benefits

Engineered for commercial-grade applications, the 8904 motor is ideal for system retrofits or new installations. The reversible rotation and compact frame enable straightforward orientation across multi-configuration systems, while permanently lubricated ball bearings minimize maintenance over extended run periods. Built to meet high-volume operating conditions, this model supports efficient airflow and sustained output over time.

Performance and Technical Highlights

• ✅ PSC (Permanent Split Capacitor) Motor – Delivers consistent efficiency with simplified wiring.
• ✅ Auto Reset Thermal Overload Protection – Prevents heat-related failure by interrupting operation at threshold temps.
• ✅ Reversible Rotation – Adaptable to clockwise or counterclockwise blower configurations.
• ✅ Ball Bearing Design – Self-aligning bearings reduce mechanical load and wear.
• ✅ Compact, Direct Drive Assembly – Compatible with confined installations using hub/band/stud mounting options.
• ✅ Continuous Duty Rated – Supports long operating cycles without derating.

Motor Specifications

• Horsepower: 3/4 HP
• Voltage: 115V
• Full Load Amps: 9.5 A
• Speed: 1075 RPM
• Frame: 48
• Insulation Class: B
• Mounting: Band / Hub / Stud
• Service Factor: 1.0

Installation Notes

Installation of the U.S. Motors 8904 should be conducted by qualified personnel familiar with HVAC electrical systems and local code compliance. Mounting hardware must align with the motor frame size and airflow direction should be verified prior to wiring. Wiring should conform to OEM schematics and all connections inspected prior to commissioning.

Designed for Trade Professionals

Built to meet the needs of HVAC technicians and mechanical contractors, this motor supports high-reliability blower performance in both retrofit and new system applications. Its compact footprint and efficient design provide flexibility across a wide range of system configurations, while ensuring safe and continuous operation in high-demand environments.