Browning 3693819 Qd Bushed V-belt Sheave 1 Groove 15.68 in

Product Description

The BROWNING 3693819 is a single-groove, Quick-Detachable (QD) bushed V-belt sheave designed for power transmission applications in HVAC, industrial, and mechanical drive systems. Built from cast iron, this sheave accepts 5V, A, and B cross-section V-belts and features an outside diameter of 15.68 inches with a belt pitch diameter of 15.5 inches for 5V-profile belts. The B-style QD bushing mount allows bore diameters ranging from 5/8 inch to 2-1/4 inches, making it adaptable to a wide range of shaft sizes. Licensed tradesmen and mechanical contractors use this sheave in belt-driven fan, blower, and pump assemblies.

This sheave is suited for residential and commercial HVAC belt-drive blower assemblies, industrial fan drives, and pump systems where a single 5V, A, or B section V-belt is required. The QD bushing system simplifies installation and removal on shafts within the supported bore range, reducing downtime during maintenance or drive ratio changes. It is a common component in air handling units, centrifugal fans, and motor-to-shaft power transfer setups where a large-diameter sheave is needed to achieve the correct speed ratio.

Key Features

• Single-groove design for 5V, A, and B cross-section V-belts
• Outside diameter of 15.68 inches; belt pitch diameter of 15.5 inches (5V profile)
• Bore range from 5/8 inch to 2-1/4 inches via B-style QD bushing
• Cast iron construction for durability in high-cycle drive applications
• Quick-Detachable bushing mount for fast shaft installation and removal
• UNSPSC Code 31171804 for procurement and catalog classification

Compatibility

Designed as an OEM-style replacement or new-installation sheave for belt-drive systems requiring a single-groove 5V, A, or B section V-belt with a B-style QD bushing and a shaft diameter between 5/8 inch and 2-1/4 inches.

Installation Notes

Installation should be performed by a qualified mechanical or HVAC technician. De-energize and lock out the drive motor before mounting or removing the sheave. The QD bushing must be matched and torqued to the bushing manufacturer specifications; do not over-tighten or use impact tools on bushing fasteners. Verify belt tension and sheave alignment with a straightedge or laser alignment tool after installation to prevent premature belt and bearing wear.