Lau g078052506 Fixed Bore V-belt Pulley 8 in 1 in Bore

Product Description

The LAU g078052506 is a fixed bore V-belt pulley designed for use in HVAC blower and fan drive assemblies. Also identified as an AK-series sheave, this pulley features an 8-inch outer diameter and a 1-inch bore, making it a standard single-groove V-belt drive component. HVAC technicians and mechanical contractors install this type of sheave on belt-driven blower wheels, supply fans, and exhaust fans in commercial and residential air handling equipment. It transfers rotational force from a motor shaft to a blower wheel through a standard A-section or AK-compatible V-belt.

This pulley is suited for belt-driven air handling units, rooftop units, and fan coil assemblies where a single-groove fixed bore sheave is required. The AK-series designation indicates compatibility with A-section V-belts, which are common in light to medium-duty blower drive applications. It is typically found in systems where the motor and blower operate on parallel shafts with a direct belt drive arrangement. Installers select this sheave when replacing worn or damaged pulleys on existing blower assemblies or when configuring a new drive system to a specific fan speed ratio.

Key Features

• 8-inch outer diameter sized for standard single-groove AK-series V-belt drive configurations
• 1-inch fixed bore fits directly onto a 1-inch motor or blower shaft
• AK-series sheave profile compatible with A-section V-belts
• Fixed bore design provides a rigid, secure shaft connection without additional bushing hardware
• Intended for blower, fan, and air handler drive assemblies in HVAC applications

Compatibility

Designed as an OEM-style replacement fixed bore V-belt sheave for belt-driven blower and fan assemblies in residential and commercial HVAC equipment requiring an 8-inch AK-series pulley with a 1-inch bore.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out power to the air handler or fan unit before servicing the drive assembly. Align the pulley and mating sheave carefully using a straightedge to prevent premature belt and bearing wear, and verify belt tension according to the equipment manufacturer's specifications. Do not overtighten set screws beyond the shaft manufacturer's recommended values.

Technical Specifications

• Outer Diameter: 8 inches
• Bore Size: 1 inch
• Sheave Series: AK
• Groove Configuration: Single groove
• Belt Section: A-section V-belt
• Bore Type: Fixed bore

Standard Information

• Brand: LAU
• Manufacturer Part Number: g078052506