Lovejoy 68514427095 Variable Speed Pulley 5in Od

Product Description

The LOVEJOY 68514427095 is a spring loaded variable speed pulley from the Econoline series, designed for use in belt-driven mechanical drive applications. It features a minimum pitch diameter of 1.72 inches, a maximum diameter of 4.65 inches, and a 5 inch outside diameter, allowing it to continuously vary drive speed by adjusting belt position across the pulley face. The pulley is 3.5 inches long and bored to a 7/8 inch inside diameter with a 3/16 x 3/32 inch keyway for positive shaft engagement. Rated at 0.5 horsepower at 1750 RPM and 0.333 horsepower at 1150 RPM, this component suits light-duty variable speed drive setups. Installation is typically performed by millwrights or mechanical technicians.

This variable speed pulley is intended for use in HVAC fan drives, blower assemblies, and other light industrial or commercial mechanical systems where adjustable output speed is required without changing the motor. It accepts B-series V-belts and is suited for applications requiring continuous speed variation within the rated horsepower range. The spring-loaded design automatically maintains belt tension as the pitch diameter changes, reducing the need for manual belt adjustment during operation.

Key Features

• Spring-loaded design automatically maintains belt tension across the variable pitch range
• Accepts B-series V-belts for broad belt availability
• Keyway included (3/16 x 3/32 inches) for positive shaft-to-pulley engagement
• Rated 0.5 HP at 1750 RPM and 0.333 HP at 1150 RPM for light-duty drive applications
• Econoline series construction for standard variable speed drive replacements
• 3.5 inch length with 7/8 inch bore accommodates common shaft sizes in fan and blower assemblies

Compatibility

Designed as an OEM-style replacement for spring loaded variable speed pulleys used in residential and light commercial belt-drive fan and blower applications accepting B-series V-belts.

Installation Notes

Installation should be performed by a qualified millwright or mechanical technician. Disconnect and lock out all power to the drive system before beginning work. Verify shaft diameter and keyway dimensions before mounting. Do not exceed the rated horsepower at the specified RPM, and ensure proper belt alignment after installation to prevent premature wear.