Browning 3694171 Qd Bushed V Belt Sheave 3 Groove

Product Description

The BROWNING 3694171 is a three-groove, quick-detachable (QD) bushed V-belt sheave designed for use in belt-driven mechanical systems found in HVAC, industrial, and commercial equipment. Built from cast iron, it accepts a B-style QD bushing and accommodates bore diameters ranging from 5/8 inch to 2-1/4 inches, making it adaptable to a wide range of shaft sizes. The outside diameter measures 5.08 inches, with a belt pitch diameter of 4.9 inches for 5V belts, 4.8 inches for B belts, and 4.4 inches for A belts. Weighing 5.15 pounds, this sheave is a direct field replacement for worn or damaged components in blower and fan drive assemblies.

This sheave is suited for residential and light commercial HVAC air handlers, fan coil units, and industrial blower assemblies where multi-groove V-belt drives are specified. The three-groove configuration supports higher power transmission loads compared to single-groove designs, making it appropriate for systems driving large blower wheels or dual-belt configurations. HVAC technicians and mechanical contractors typically install this component during scheduled belt drive maintenance or motor and blower replacements. The QD bushing interface simplifies installation and removal without the need for special pullers in most field situations.

Key Features

• Three-groove design supports 5V, A, and B belt cross-sections
• Quick-detachable B-style bushing interface for straightforward field installation and removal
• Outside diameter of 5.08 inches with belt pitch diameter of 4.9 inches (5V), 4.8 inches (B), and 4.4 inches (A)
• Bore range of 5/8 inch to 2-1/4 inches accommodates a wide variety of shaft sizes
• Cast iron construction provides durability in continuous-duty blower and fan drive applications
• Single-unit packaging with a minimum order quantity of one

Compatibility

Designed as an OEM-style replacement sheave for three-groove V-belt drive assemblies using 5V, A, or B belt cross-sections with a B-style QD bushing. Compatible bore range of 5/8 inch to 2-1/4 inches suits a broad range of motor and blower shaft diameters in HVAC and industrial drive systems.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all power to the unit before removing or installing any drive components. Ensure the QD bushing is properly torqued per the bushing manufacturer specifications and that sheave alignment is verified with a straightedge or laser alignment tool before belt tensioning. Belt tension should be set according to the belt manufacturer guidelines to avoid premature wear or bearing failure.