Description
US Motors LX7921 Direct Drive Blower Motor Overview
The US Motors LX7921 is a reliable direct drive blower motor engineered for demanding HVAC air-handling applications. Built to the 48Y NEMA frame standard, this motor delivers consistent airflow performance across a wide range of residential and light commercial systems. Its four-speed capability and open air-over enclosure design make it a versatile drop-in replacement for furnace air handlers, fan coil units, and similar blower assemblies.
Key Specifications
- Horsepower: 1/3 HP
- Voltage: 115V AC
- Phase: Single Phase
- Speed: 1,075 RPM (4-Speed)
- Amperage: 5.1 Amps
- NEMA Frame Size: 48Y
- Enclosure Type: Open Air Over (OAO)
- Bearing Type: SAB (Sleeve/Ball)
- Mount Type: Flex Bracket Mount
- Rotation: Counterclockwise (CCW) — Lead End
Design & Construction Features
- 48Y NEMA frame ensures broad OEM and aftermarket compatibility
- Open air-over enclosure optimizes cooling in forced-air blower applications
- SAB bearing design provides long service life and reduced maintenance
- Flex bracket mount simplifies installation and accommodates varied cabinet configurations
- Four-speed winding allows system balancing and airflow optimization without additional controls
- CCW rotation from the lead end — verify rotation direction before installation
Applications
- Residential and light commercial furnace air handlers
- Fan coil units and blower assemblies
- Direct drive HVAC blower replacement applications
- Systems requiring multi-speed airflow control
Why Choose US Motors
US Motors (a Nidec brand) is a trusted name in HVAC motor manufacturing, known for quality construction, broad application coverage, and dependable performance. The LX7921 continues that tradition, offering contractors and technicians a motor they can rely on for long-term system efficiency.
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