Browning 1028380 Single Groove Sheave 5 in Od Cast Iron

Product Description

The BROWNING 1028380 is a finished bore single groove sheave designed for use with V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. It features a 5-inch outside diameter and a 5/8-inch finished bore, with a belt pitch diameter of 4.0 inches for 4L or A-type belts. The sheave is cast from iron for durable, long-service performance in high-cycle drive applications. At 2 pounds, it is a compact component suited for blower and fan drive assemblies. Installation is typically performed by HVAC technicians or millwrights during equipment setup or belt drive service.

This sheave is used in belt-driven blower, fan, and pump assemblies found in residential and light commercial HVAC systems, as well as general mechanical power transmission setups. The finished bore is ready to receive a 5/8-inch shaft without additional machining. The single groove configuration accepts one 4L or A-section V-belt. The overall length through the bore measures 1-5/32 inches, making it compatible with standard shaft and keyway mounting arrangements.

Key Features

• 5-inch outside diameter with 4.0-inch pitch diameter for 4L or A-section V-belts
• 5/8-inch finished bore — no additional machining required
• Single groove design for one V-belt drive configuration
• Cast iron construction for durability in high-cycle applications
• Overall length through bore: 1-5/32 inches
• Lightweight at 2 pounds for easy handling and installation

Compatibility

Designed as an OEM-style replacement or new-installation sheave for V-belt drive systems using 4L or A-section belts with a 5/8-inch bore shaft.

Installation Notes

Installation is performed by a qualified HVAC technician or mechanical technician. Disconnect and lock out all power to the unit before servicing the drive assembly. Verify shaft diameter and keyway dimensions before mounting. Align the sheave properly with the mating pulley before tensioning the belt to manufacturer-specified deflection guidelines to prevent premature wear.