Browning 1033190 Two Groove Sheave 3.15in Od 7/8in Bore

Product Description

The BROWNING 1033190 is a finished bore two groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron, this sheave measures 3.15 inches in outer diameter with a 7/8 inch finished bore and a 1.75 inch face width. The B-pitch belt diameter is 2.8 inches, and the pitch diameter for 4L or A-type belts is 2.4 inches. The through-bore length is 1-31/32 inches. Weighing 2.15 pounds, it is a direct drop-in replacement sheave suited for blower and fan drive assemblies in residential and light commercial systems.

This sheave is commonly installed on belt-drive blower assemblies, fan shafts, and auxiliary drive systems where a two groove configuration is required to run dual V-belts. A finished bore means the bore is machined to a specific diameter and is ready to mount to a shaft without additional boring. Typical applications include air handling units, furnace blowers, and general mechanical drive systems that accept standard A or 4L cross-section V-belts. Installation is performed by HVAC technicians or mechanical tradespeople as part of a blower motor or drive assembly service.

Key Features

• Two groove configuration supports dual V-belt drive setups
• Finished bore at 7/8 inch for direct shaft mounting without rework
• Cast iron construction for durability in belt-drive service
• Compatible with standard A and 4L cross-section V-belts
• Compact 3.15 inch OD suitable for space-constrained drive assemblies
• Through-bore length of 1-31/32 inches for adequate shaft engagement

Compatibility

Designed as an OEM-style replacement sheave for belt-drive blower and fan assemblies using standard A or 4L type V-belts with a 7/8 inch shaft bore requirement.

Installation Notes

Sheave installation is typically performed by a licensed HVAC technician or qualified mechanical tradesperson. Disconnect and lock out all power to the drive system before removing or installing any sheave. Ensure the shaft is clean and free of burrs before seating the bore, and verify set screw torque against the drive assembly manufacturer specifications. Align sheave grooves within the drive system before tensioning belts to manufacturer-recommended deflection values.