Browning 3693967 Qd Bushed V Belt Sheave 2 Groove 6.48 in

Product Description

The BROWNING 3693967 is a two-groove, quick-detachable (QD) bushed V belt sheave designed for use with 5V, A, and B series belts. It features an outside diameter of 6.48 inches and accepts bore sizes from 5/8 inch up to 2-1/4 inches through a B-style QD bushing, allowing field adaptation to a wide range of shaft sizes. Cast from iron for durability in demanding drive applications, this sheave weighs 8.5 pounds and is installed by HVAC and mechanical drive technicians on belt-driven fan and blower assemblies. The 6.3-inch belt pitch diameter for 5V belts ensures proper belt seating and drive ratio accuracy.

This sheave is suited for residential and commercial belt-drive applications including air handling units, blower sections, and industrial fan assemblies. The two-groove configuration supports dual-belt drive setups, which distribute load and improve drive reliability compared to single-belt arrangements. Installers working on rooftop units, large air handlers, and centrifugal fans will find this sheave fits a broad range of shaft and belt combinations within its bore and belt series range.

Key Features

• Two-groove design supports dual 5V, A, or B series V belts
• 6.48-inch outside diameter with 6.3-inch belt pitch diameter for 5V belts
• QD bushing style B allows bore sizing from 5/8 inch to 2-1/4 inches in the field
• Iron construction provides strength and wear resistance in continuous-duty drive applications
• Compatible with multiple belt trade sizes: 5V, A, and B series

Compatibility

Designed for use with 5V, A, and B series V belts. Accepts a B-style QD bushing with bore diameters ranging from 5/8 inch to 2-1/4 inches. Suitable as an OEM-style or replacement sheave for belt-driven fan and blower assemblies using these belt series.

Installation Notes

Installation is typically performed by licensed HVAC technicians or mechanical drive specialists. Disconnect and lock out all power to the drive system before removing or installing sheaves. The QD bushing must be torqued according to the bushing manufacturer's specifications — do not estimate. Verify belt tension and sheave alignment with a straightedge or laser alignment tool after installation to prevent premature belt and bearing wear.