Lennox 79J03 Motor Pulley 7/8" Bore 3.75" OD

The Lennox 79J03 is a motor pulley, a key component in HVAC equipment like blowers and fan motors. It plays a critical role in transmitting rotational power. Here's how it works: the motor shaft spins the pulley, which in turn drives the belt. As the belt rotates around the pulley, it transfers this power to the fan, creating airflow throughout the HVAC system. This particular Lennox pulley is made of cast iron for durability and features a variable-pitch design, offering adjustability for specific needs. It measures 3.75 Inches in diameter and has a bore size of 7/8 Inch to fit the motor shaft. The Lennox 79J03 is compatible with various belt types (4L or A, 5L or B, and 5V), providing versatility for different applications. By ensuring efficient power transfer between the motor and the fan, the Lennox 79J03 motor pulley contributes to optimal airflow and overall system performance.