Browning 3694601 Qd Bushed V Belt Sheave 4 Groove

Product Description

The BROWNING 3694601 is a four-groove, Quick Detachable (QD) bushed V-belt sheave designed for industrial and commercial HVAC drive applications. Built from cast iron with a B-style bushing mount, this sheave accepts 5V, A, and B cross-section belts and accommodates bore diameters from 5/8 inch up to 2-1/4 inches. The outside diameter measures 9.28 inches, with a 5V belt pitch diameter of 9.1 inches and a B-belt pitch diameter of 9.0 inches. The QD bushing design allows for quick installation and removal without specialized pullers, making field service efficient on belt-driven fan and blower assemblies. At 18.05 pounds, this is a substantial cast-iron component suited for medium to large drive systems.

This sheave is commonly used in belt-driven blower and fan assemblies found in commercial HVAC air handlers, rooftop units, and industrial ventilation systems. The four-groove configuration supports multi-belt drive setups that require higher torque transmission or added redundancy. It is sized for systems using 5V, A, or B series V-belts, making it a versatile option across a range of drive configurations. HVAC mechanics and millwrights typically install this sheave during motor or blower drive replacements, sheave upgrades, or speed adjustments accomplished by changing sheave diameter ratios.

Key Features

• Four grooves accommodate 5V, A, and B cross-section V-belts
• QD (Quick Detachable) B-style bushing mount for fast installation and removal
• Outside diameter of 9.28 inches with 5V pitch diameter of 9.1 inches
• Bore range from 5/8 inch to 2-1/4 inches covers a wide range of shaft sizes
• Cast iron construction for durability in continuous-duty belt drive service

Compatibility

Compatible with 5V, A, and B cross-section V-belts. Accepts B-style QD bushings for shaft bore sizing between 5/8 inch and 2-1/4 inches. Designed as a direct-fit replacement or upgrade sheave for four-groove belt drive systems using these belt series.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all electrical power to the motor before servicing the drive assembly. Match the bushing bore to the shaft diameter and verify belt tension and sheave alignment with a straightedge or laser alignment tool after installation. Do not overtighten bushing cap screws beyond the fastener manufacturer specifications stamped or listed on the bushing.