Browning 3694569 Qd Bushed V Belt Sheave 4 Groove

Product Description

The BROWNING 3694569 is a four-groove, Quick Detachable (QD) bushed V belt sheave designed for industrial and commercial HVAC blower and fan drive applications. It accepts a B-style QD bushing and accommodates bore diameters from 5/8 inch up to 2-1/4 inch, giving installers flexibility when matching shaft sizes in the field. The outside diameter measures 7.28 inches, with a 5V belt pitch diameter of 7.1 inches and a B-section pitch diameter of 7.0 inches. At 14.8 pounds, this is a heavy-duty cast sheave suited for continuous-duty belt drive systems. HVAC mechanics and millwrights install this sheave to transfer power from motors to fan wheels, blowers, and similar rotating equipment.

This sheave is used in commercial and industrial mechanical systems where V belt drives power air handling units, rooftop units, exhaust fans, centrifugal blowers, and similar rotating equipment. The four-groove configuration allows multiple belt runs in parallel, distributing load across the drive and reducing belt wear. The QD bushing system simplifies installation and removal on motor or shaft ends without requiring special pullers. This part is installed by HVAC technicians, millwrights, and mechanical contractors working on belt drive assemblies in both new construction and replacement service scenarios.

Key Features

• Four-groove design supports parallel multi-belt drive configurations for high-load applications
• QD bushed mount with B-style bushing for tool-accessible installation and removal
• Outside diameter of 7.28 inches with 5V pitch diameter of 7.1 inches
• Wide bore range from 5/8 inch to 2-1/4 inch accommodates a variety of shaft sizes
• Compatible with both A-section and B-section V belts as well as 5V cross-section belts based on pitch diameter specs
• Robust construction at 14.8 pounds for continuous-duty belt drive service

Compatibility

Designed as an OEM-style replacement or new-install sheave for four-groove V belt drive assemblies using B-style QD bushings. Accepts 5V, A-section, and B-section V belts per the published pitch diameter specifications. Bore sizing accommodates shafts from 5/8 inch to 2-1/4 inch.

Installation Notes

Installation and removal should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the motor and drive assembly before beginning work. Confirm the correct B-style QD bushing is on hand before mounting, as the bushing is ordered separately from the sheave. Follow the bushing manufacturer torque sequence when tightening set screws, and inspect belt tension and sheave alignment with a straightedge after installation to prevent premature belt and bearing wear.