Browning 1028042 Single Groove Sheave 3.2in Od 5/8in Bore

Product Description

The BROWNING 1028042 is a finished bore single groove sheave designed for use with B-section or A-section V-belts in belt-drive power transmission systems. Cast iron construction gives this sheave the rigidity and wear resistance needed in commercial HVAC, industrial fan, and blower drive applications. The sheave features a 5/8 inch finished bore and a 3.2 inch outer diameter, with a pitch diameter of 2.6 inches for 4L or A-type belts. At 1 pound, it is compact and straightforward to mount on standard motor or driven-shaft configurations. Installation is handled by HVAC technicians, millwrights, and mechanical contractors as part of belt-drive system service or replacement work.

This sheave is suited for single-belt drive setups in residential and light commercial HVAC equipment, including air handlers, evaporator coil blower assemblies, condenser fan drives, and exhaust fan systems. It is commonly installed on motor shafts or blower shafts where a standard A or 4L V-belt is the drive element. The 13/16 inch groove width and finished bore allow direct mounting without additional machining, making it a practical OEM-style replacement or new-installation component for belt-drive blower and fan systems.

Key Features

• Finished bore at 5/8 inch — no additional machining required for standard shaft sizes
• Cast iron construction for durability and dimensional stability under load
• Single groove design accepts 4L or A-section V-belts
• 3.0 inch pitch diameter optimized for accurate belt-speed calculations
• Groove width of 13/16 inch matches standard A and 4L belt profiles
• Lightweight at 1 pound for easy handling during overhead or tight-space installs

Compatibility

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

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the unit before removing or installing drive components. Verify shaft diameter matches the 5/8 inch finished bore before mounting, and ensure the sheave is properly aligned with the mating sheave using a straightedge or laser alignment tool to prevent premature belt and bearing wear. Secure with a properly sized setscrew or key as appropriate for the shaft configuration.