Browning 1028083 Single Groove Sheave 5/8 Bore 3.55 Od

Product Description

The BROWNING 1028083 is a finished bore single groove sheave designed for use with 4L- and A-series V-belts in light-duty power transmission applications. Cast from iron for durability, this sheave features a 5/8 inch finished bore, a 3.55 inch outer diameter, and a belt groove width of 7/8 inch. The pitch diameter for 4L or A belt types is 2.8 inches, and the overall length through bore measures approximately 1-5/32 inches. HVAC technicians, mechanical contractors, and equipment service professionals install this type of sheave when replacing worn drive components on fans, blowers, and auxiliary equipment.

This sheave is suited for single-belt V-drive configurations found in residential and light commercial HVAC systems, specifically on belt-drive blower assemblies, exhaust fans, and similar rotating equipment. It is installed on the driver or driven shaft wherever a 4L or A-series belt drive is specified. The finished bore allows direct mounting to a 5/8 inch shaft without additional machining.

Key Features

• Finished 5/8 inch bore — ready to mount on standard 5/8 inch shafting with no additional machining
• 3.55 inch outer diameter with a 2.8 inch pitch diameter for 4L and A belt types
• Single groove design for straightforward single-belt V-drive setups
• Cast iron construction provides strength and wear resistance in continuous-duty applications
• 7/8 inch groove width matches standard 4L and A-series belt cross sections
• Overall length through bore of 1-5/32 inches suits compact drive arrangements

Compatibility

Designed as an OEM-style replacement sheave for single-groove V-belt drives using 4L or A-series belts on 5/8 inch shafting in residential and light commercial equipment.

Installation Notes

Installation should be performed by a qualified technician. Disconnect and lock out all power to the equipment before removing the existing sheave or belt. Confirm shaft diameter, belt cross section, and required pitch diameter before mounting. After installation, check belt tension and sheave alignment per the equipment manufacturer's specifications before returning the unit to service.