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The BROWNING 3694320 is a three-groove, QD bushed V belt sheave designed for industrial belt drive applications. It accepts 5V, A, and B cross-section belts and mounts via a B-style QD bushing, allowing fast installation and removal without special tooling. The outside diameter measures 9.28 inches, the belt pitch diameter for 5V belts is 9.1 inches, and the bore range spans 5/8 inch minimum to 2-1/4 inch maximum to accommodate a wide range of shaft sizes. Cast iron construction provides durability under continuous-duty load. HVAC and mechanical contractors install this sheave on fan and blower drive assemblies in air-handling equipment.
This sheave is suited for residential and commercial HVAC fan drive systems, industrial blower assemblies, and pump drive applications where three-groove V belt configurations are required. The QD bushing interface simplifies shaft mounting and allows the sheave to be repositioned or replaced without removing the shaft from the equipment. The bore range makes it adaptable to common motor and blower shaft diameters found in rooftop units, air handlers, and belt-drive exhaust fans.
Designed for use with 5V, A, and B cross-section V belts on systems requiring a B-style QD bushing. Suitable as an OEM-style replacement or upgrade sheave on belt-drive fan and blower assemblies that accept a three-groove QD-mounted sheave with a bore up to 2-1/4 inches.
Installation should be performed by a qualified HVAC technician or industrial mechanic. Disconnect and lock out power to the drive system before removing existing sheaves or belts. Ensure the mating QD bushing is the correct B-style and that shaft diameter falls within the 5/8 inch to 2-1/4 inch bore range before assembly. After installation, verify belt tension and sheave alignment per the belt manufacturer guidelines before returning the system to service.
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