Description
The Lennox 19U20 Pulley Blower 1-3/16″ is a cast iron, fixed-bore sheave used in compatible drive systems to transmit motor rotation to the assembly through a belt. It operates by maintaining proper belt alignment and converting motor speed into controlled wheel speed for consistent airflow. It is installed on the shaft or motor shaft in belt-driven air handling units where precise airflow delivery is required for heating and cooling performance. It plays an essential role in ensuring efficient mechanical power transfer, stable operation, and proper system airflow balance in HVAC systems.
