Browning 3694221 3-groove Qd Bushed V-belt Sheave 6.08 in

Product Description

The BROWNING 3694221 is a three-groove, Quick Detachable (QD) bushed V-belt sheave designed for power transmission applications in HVAC, industrial, and mechanical drive systems. It accepts B-style bushing and accommodates bore diameters from 5/8 inch to 2-1/4 inch, giving technicians flexibility when matching to a shaft. The outside diameter measures 6.08 inches, with a 5V belt pitch diameter of 5.9 inches. Cast iron construction provides durability under continuous belt load. This sheave is installed by mechanical or HVAC service technicians replacing drive components on fans, blowers, pumps, and similar belt-driven equipment.

This sheave is suited for residential and light commercial HVAC air handlers, rooftop units, and exhaust fans where V-belt drives connect the motor shaft to the blower or fan wheel. It is also used in general industrial power transmission setups requiring a three-groove drive with 5V, A, or B belt profiles. The QD bushing mount simplifies installation and removal, making it a practical choice for scheduled maintenance or emergency drive replacements in the field.

Key Features

• Three grooves compatible with 5V, A, and B belt profiles
• QD (Quick Detachable) bushing mount accepts B-style bushing for easy installation and removal
• Bore range of 5/8 inch to 2-1/4 inch covers a wide range of motor and driven-shaft sizes
• 6.08 inch outside diameter with 5.9 inch 5V belt pitch diameter
• Cast iron construction for durability in continuous-duty belt drive applications

Compatibility

Designed as an OEM-style replacement or upgrade sheave for three-groove V-belt drives using 5V, A, or B belt profiles with B-style QD bushing mounting.

Installation Notes

Installation should be performed by a qualified mechanical or HVAC technician. Disconnect and lock out all power to the driven equipment before removing the existing sheave or belt. The QD bushing must be matched to the shaft diameter before installation; confirm bore size and keyway dimensions before ordering. Inspect belt condition and tension after installation and verify sheave alignment with a straightedge or laser alignment tool before returning the system to service.