Browning 3694668 Qd Bushed V Belt Sheave 4 Groove

Product Description

The BROWNING 3694668 is a four-groove, Quick Detachable (QD) bushed V belt sheave designed for industrial and commercial HVAC drive systems. Featuring an outside diameter of 16.28 inches and a bore range of 5/8 inch to 2-1/4 inch, this sheave accommodates a wide variety of shaft sizes through its B-style QD bushing mount. The 5V belt pitch diameter measures 16.1 inches, making it compatible with 5V section V belts in multi-groove drive configurations. Weighing 41.66 pounds, this is a heavy-duty component suited for air handling, blower, and fan drive assemblies where precise belt alignment and repeatable installation are critical.

This sheave is used in belt-driven blower and fan assemblies commonly found in commercial HVAC air handlers, industrial ventilation systems, and large rooftop units. HVAC mechanics and millwrights install this component during new system builds and drive system rebuilds. It is appropriate where a four-groove 5V drive is specified and a field-adjustable bore size is needed to match the driven or driver shaft on site. The QD bushing design allows fast removal and reinstallation without specialized pullers in most applications.

Key Features

• Four-groove profile accepts 5V section V belts for high-torque multi-belt drive configurations
• Outside diameter of 16.28 inches with a 5V belt pitch diameter of 16.1 inches
• Bore range from 5/8 inch to 2-1/4 inch accommodates a wide range of shaft sizes via B-style QD bushing
• Quick Detachable bushing mount simplifies installation, alignment, and future removal
• Belt pitch A diameter of 15.6 inches and pitch B diameter of 16.0 inches broaden drive design flexibility
• Substantial 41.66-pound construction suited for continuous-duty commercial and industrial fan drives

Compatibility

Designed as an OEM-style replacement or upgrade sheave for four-groove 5V belt drive systems in commercial HVAC air handlers, blowers, and industrial fan assemblies requiring a B-style QD bushing mount.

Installation Notes

Installation should be performed by a qualified HVAC mechanic or millwright. De-energize and lock out the drive system completely before removing or installing any sheave. The QD bushing must be torqued per the bushing manufacturer's specifications using a calibrated torque wrench — do not rely on feel alone. After installation, verify belt tension and sheave alignment with a straightedge or laser alignment tool before returning the system to service.