Browning 3694239 Qd Bushed V Belt Sheave 3 Groove

Product Description

The BROWNING 3694239 is a three-groove, QD bushed V belt sheave designed for power transmission applications in HVAC, industrial, and mechanical systems. It features a 6.28-inch outside diameter and accepts bore sizes ranging from 5/8 inch to 2-1/4 inch, accommodating a wide range of shaft sizes through its quick-detachable bushing system. The sheave is compatible with A, B, and 5V belt profiles, with pitch diameters of 5.6 inches for A belts, 6.0 inches for B belts, and 6.1 inches for 5V belts. HVAC technicians and mechanical contractors install this component on blower assemblies, fan drives, and pump drives where reliable belt-driven torque transfer is required.

This sheave fits residential and light commercial belt-drive systems where three-groove configurations are used to balance load distribution and reduce belt wear. The QD bushing style simplifies field installation and removal without requiring complete shaft disassembly. It is well suited for air handling unit blower drives, condenser fan assemblies, and similar rotating equipment that uses classical or 5V wedge belt standards. The B-style bushing bore range makes this sheave adaptable to a broad variety of motor and blower shaft sizes encountered in the field.

Key Features

• Three-groove design distributes load across multiple belts for balanced drive performance
• QD quick-detachable B-style bushing allows fast installation and removal in tight spaces
• 6.28-inch outside diameter suits standard blower and fan drive configurations
• Compatible with A, B, and 5V belt profiles for broad application flexibility
• Bore range of 5/8 inch to 2-1/4 inch accommodates common motor and shaft sizes
• Weighs 9 pounds, typical of cast iron construction used in power transmission sheaves

Compatibility

Designed as an OEM-style replacement or upgrade sheave for belt-driven HVAC blower assemblies, fan drives, and pump drive systems using A, B, or 5V profile belts with a B-style QD bushing mount.

Installation Notes

Installation should be performed by a licensed HVAC technician or mechanical contractor. Disconnect and lock out all electrical power to the unit before handling any rotating drive components. The QD bushing must be seated and torqued to the sheave hub using appropriate fasteners before belt tensioning; do not operate the drive with loose bushing hardware. Verify belt alignment with a straightedge or laser alignment tool after installation to prevent premature belt and bearing wear.