Browning 3693694 Qd Bushed V Belt Sheave 1 Groove

Product Description

The BROWNING 3693694 is a single-groove, Quick Detachable (QD) bushed V belt sheave designed for power transmission applications in HVAC, industrial, and mechanical drive systems. It accepts a B-style QD bushing and accommodates bore diameters ranging from 5/8 inch to 2-1/4 inch, making it adaptable to a wide range of shaft sizes without requiring a dedicated fixed-bore sheave. The outside diameter measures 6.68 inches, with a belt pitch A diameter of 6.0 inches, a belt pitch B diameter of 6.4 inches, and a belt pitch 5V diameter of 6.5 inches. Licensed HVAC mechanics and millwrights specify this sheave for fan drives, blower assemblies, and pump drive systems where quick bushing removal simplifies field service.

This sheave is suited for single V belt drive configurations in light commercial and industrial equipment. Typical installations include rooftop unit supply fan drives, air handling unit blower sections, and general mechanical drive assemblies where a 5V or A/B cross-section belt is specified. The QD bushing interface allows the sheave to be installed and removed without special pullers, reducing downtime during drive maintenance. It is appropriate for new installations as well as direct replacement of worn or damaged sheaves on existing drive trains.

Key Features

• Single groove design for standard single V belt drive configurations
• Quick Detachable B-style bushing interface for fast, tooling-friendly installation and removal
• Wide bore range of 5/8 inch to 2-1/4 inch accommodates multiple shaft sizes with one SKU
• 6.68 inch outside diameter with 6.0 inch pitch diameter for A belts, 6.4 inch for B belts, and 6.5 inch for 5V belts
• Compatible with A, B, and 5V cross-section V belts, adding flexibility across drive designs

Compatibility

Designed as an OEM-style replacement or new-installation sheave for single V belt drives using A, B, or 5V cross-section belts with a B-style QD bushing. Sold without bushing — bushing must be sourced separately to match the required shaft diameter.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before mounting or removing the sheave. Confirm the selected QD bushing bore matches the shaft diameter and that sheave alignment is within manufacturer tolerances before tensioning the belt to avoid premature wear. Follow applicable ANSI and OSHA guarding requirements for exposed belt and sheave assemblies.