Browning 3694304 3B5V80 Qd Bushed V Belt Sheave 3 Groove

Product Description

The BROWNING 3694304 is a QD bushed V belt sheave designed for industrial belt drive systems requiring reliable, field-adjustable bore sizing. Identified by the Browning part designation 3B5V80, this sheave features three grooves and accepts standard V belt profiles including A, B, and 5V cross-sections. The outside diameter measures 8.28 inches, with a belt pitch diameter of 8.1 inches for 5V belts, 8.0 inches for B belts, and 7.6 inches for A belts. Minimum bore diameter is 5/8 inch and maximum bore diameter is 2-1/4 inch, accommodating a wide range of shaft sizes via the included quick-detachable bushing system. The assembled sheave and bushing weigh 13.7 pounds.

This sheave is suited for HVAC fan and blower drive applications, industrial motor-to-fan assemblies, cooling tower drives, and general-purpose power transmission setups found in commercial and light industrial environments. The QD bushing style B mount allows the sheave to be installed quickly on shafts within the bore range without custom machining, making it a practical choice for service technicians replacing worn or damaged sheaves on belt-driven fan systems.

Key Features

• Three-groove configuration supports multi-belt drive setups for higher torque capacity
• Compatible with A, B, and 5V belt cross-sections across three pitch diameter references
• QD bushing style B mount allows fast installation and removal from the shaft
• Bore range of 5/8 inch to 2-1/4 inch accommodates a broad selection of motor and fan shaft sizes
• 8.28 inch outside diameter with 8.1 inch 5V pitch diameter for accurate belt drive calculations
• 13.7 pound assembled weight indicates heavy-duty cast construction suitable for continuous-duty operation

Compatibility

Designed as an OEM-style replacement or upgrade sheave for belt-driven fan and blower assemblies using A, B, or 5V profile V belts with a QD style B bushing mount and shaft diameters between 5/8 inch and 2-1/4 inch.

Installation Notes

Installation should be performed by a qualified millwright, HVAC mechanic, or industrial maintenance technician. Disconnect and lock out all electrical power to the drive motor before removing or installing the sheave. Ensure the QD bushing is properly seated and all bushing bolts are torqued evenly per the bushing manufacturer's specifications — do not rely on feel alone. After installation, verify belt tension and sheave alignment with a straightedge or laser alignment tool before returning the system to service.