Lau g078101848 Variable Pitch Pulley 6.55 in Single Groove

Product Description

The LAU g078101848 is a single-groove variable pitch V-belt pulley designed for use in HVAC air handling and fan drive applications. With an outer diameter of 6.55 inches and a bore size of 1.125 inches, this pulley is built to transmit power between a motor shaft and a blower wheel or fan assembly. Variable pitch pulleys allow technicians to adjust belt speed and airflow without replacing the pulley, making them a practical choice for balancing and commissioning air distribution systems. Licensed HVAC technicians and sheet metal mechanics are the typical installers for this type of component.

This pulley fits standard single-groove V-belt drive configurations commonly found in residential and light commercial air handlers, furnace blower assemblies, and belt-drive fan coil units. The 6.55-inch OD and 1.125-inch bore suit a range of blower motor shaft sizes used across these system types. It ships in a box quantity of one unit.

Key Features

• 6.55-inch outer diameter for compatibility with standard V-belt drive setups
• 1.125-inch bore accommodates common blower motor shaft sizes
• Single-groove design matches one-belt drive configurations
• Variable pitch construction allows field adjustment of drive speed and airflow
• Sold individually, one unit per package

Compatibility

Designed as an OEM-style replacement for single-groove V-belt pulley applications in residential and light commercial HVAC blower and fan drive assemblies.

Installation Notes

Disconnect and lock out electrical power to the air handler or furnace before servicing the blower drive assembly. A licensed HVAC technician should verify proper belt tension and pulley alignment after installation using standard alignment tools. Confirm that the motor shaft diameter matches the 1.125-inch bore before installation. Follow applicable local mechanical codes when servicing belt-drive systems.

Technical Specifications

• Outer Diameter: 6.55 inches
• Bore Size: 1.125 inches
• Number of Grooves: 1
• Box Quantity: 1

Standard Information

• Brand: LAU
• Manufacturer Part Number: g078101848