Browning 3694379 Qd Bushed V Belt Sheave 3 Groove 15.68 in

Product Description

The BROWNING 3694379 is a three-groove, quick-detachable (QD) bushed V-belt sheave designed for industrial and HVAC drive applications. It accepts 5V, A, and B belt trade sizes and features an outside diameter of 15.68 inches with a belt pitch diameter of 15.5 inches for 5V belts. The bore range spans 5/8 inch minimum to 2-1/4 inch maximum, accommodating a wide range of shaft sizes through a B-style QD bushing. Cast iron construction provides the durability required in continuous-duty motor and fan drive assemblies. HVAC technicians, millwrights, and mechanical contractors install this sheave in air handling, blower, and pump drive systems.

This sheave fits residential and commercial applications where multi-groove V-belt drives are required for reliable power transmission. Typical installations include belt-driven supply and return air fans, cooling tower fan drives, and centrifugal pump drives. The QD bushing system allows straightforward field installation and removal without specialty pullers, making it well suited for scheduled maintenance or emergency changeouts on rooftop units and central air handling equipment.

Key Features

• Three-groove design accommodates 5V, A, and B belt trade sizes for drive flexibility
• Outside diameter of 15.68 inches with 15.5-inch belt pitch diameter for 5V belts
• Bore range of 5/8 inch to 2-1/4 inch fits a wide variety of shaft sizes
• B-style QD bushing for tool-accessible installation and removal in the field
• Cast iron construction rated for continuous-duty industrial and HVAC drive service

Compatibility

Designed for use with 5V, A, and B trade-size V-belts and requires a separate B-style QD bushing sized to the shaft diameter. Suitable as an OEM-style replacement or new installation sheave in industrial and commercial HVAC belt-drive systems.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. De-energize and lock out the motor at the disconnect before removing or installing any drive components. Verify shaft diameter before selecting the appropriate B-style QD bushing, and torque all bushing fasteners according to the bushing manufacturer specifications. Check belt tension and sheave alignment with a straightedge or laser alignment tool after installation to prevent premature belt and bearing wear.