Browning 3694650 Qd Bushed V Belt Sheave 4 Groove 5V

Product Description

The BROWNING 3694650 is a four-groove, QD-bushed V-belt sheave designed for 5V, A, and B cross-section belts in industrial and commercial HVAC drive systems. It features a 15.5-inch belt pitch diameter for 5V belts, a 15.68-inch outside diameter, and accepts a B-style QD bushing with bore sizes ranging from 0.625 inches to 2.25 inches. Cast iron construction provides the mass and rigidity required for high-torque, continuous-duty blower and fan drive applications. The sheave ships without a bushing; the correct B-series QD bushing must be ordered separately to complete the assembly. Mechanical contractors, industrial technicians, and HVAC drive specialists are the primary installers.

This sheave is suited for belt-driven centrifugal fans, blowers, and air-handling unit drives where 5V or classical A/B section belts are specified. The four-groove configuration supports multi-belt drive setups that distribute load across the sheave face, reducing belt fatigue and extending drive service life. Typical installations include large rooftop units, industrial air handlers, cooling tower fan drives, and commercial ventilation systems requiring a substantial-diameter driven or driver sheave. The QD bushing interface allows fast removal and reinstallation without shaft damage, making this sheave practical for equipment with frequent maintenance cycles.

Key Features

• Four grooves accept 5V, A, and B cross-section V-belts
• 15.5-inch belt pitch diameter (5V) and 15.68-inch outside diameter
• B-style QD bushing mount — bore range 0.625 inches to 2.25 inches
• Cast iron construction for high-torque, continuous-duty operation
• QD bushing interface enables fast, damage-free shaft removal
• Bushing sold separately — specify B-series QD bushing at time of order

Compatibility

Designed for use with 5V, A, and B cross-section V-belts. Accepts any standard B-series QD bushing with a bore from 0.625 inches to 2.25 inches. Suitable as an OEM-style replacement or new-installation sheave in multi-belt fan and blower drive assemblies.

Installation Notes

Installation should be performed by a qualified mechanical or HVAC technician. De-energize and lock out the drive system at the disconnect before removing or installing any sheave or bushing. Confirm shaft diameter falls within the 0.625-inch to 2.25-inch bushing bore range before ordering a QD bushing. Align sheave grooves with a straightedge across all sheave faces before final torque of bushing capscrews, and verify belt tension per the belt manufacturer specifications after installation.