120-646

This premium variable-speed single-groove sheave is a critical component for optimizing HVAC blower motor performance. Featuring a precision-engineered 5/8-inch bore, this adjustable pulley allows for fine-tuning the rotational speed of blower wheels and fans in air handling units. By modifying the pitch diameter, it enables precise airflow control and maintains optimal belt tension within belt-drive systems. Built for durability and balanced rotation, this sheave is an essential replacement part for residential furnaces and commercial cooling systems experiencing reduced airflow, belt slippage, or mechanical vibration.
Type: Blower Motor Pulley / Variable Pitch Sheave
Size: 5/8" Bore
Application: Used in belt-driven blower assemblies for residential and commercial HVAC units, air handlers, and furnace systems to regulate fan speed and airflow.
Specifications: Single groove design, adjustable/variable pitch diameter, 5/8-inch bore size, compatible with standard blower belts.