Browning 1001320 Qd Bushed V-belt Sheave 3-groove

Product Description

The BROWNING 1001320 is a three-groove, quick-detachable (QD) bushed V-belt sheave designed for industrial and HVAC belt-drive systems. It accepts a P1-style QD bushing and accommodates bore diameters from 0.5 inches up to 1.75 inches, making it adaptable to a wide range of shaft sizes without requiring a dedicated machined bore. The outside diameter measures 4.15 inches, with a belt pitch diameter of 3.4 inches for A-section belts and 3.8 inches for B-section belts. Licensed HVAC technicians, millwrights, and mechanical contractors install this type of sheave on blower assemblies, fan drives, and auxiliary equipment drives where accurate belt alignment and repeatable torque transfer are required.

This sheave is suited for use in rooftop units, air-handling units, industrial fans, and other rotating equipment that relies on V-belt power transmission. The QD bushing system allows for straightforward installation and removal on the shaft without specialty tooling, which is practical in tight mechanical rooms or rooftop applications. The three-groove configuration supports parallel belt runs that distribute load and reduce individual belt stress, extending drive service life in continuous-duty environments.

Key Features

• Three-groove design distributes belt load across multiple A-section or B-section V-belts
• P1-style QD bushing mount enables tool-accessible installation and removal on shaft
• Bore range of 0.5 to 1.75 inches accommodates a wide variety of shaft diameters
• 4.15-inch outside diameter with 3.4-inch A-belt pitch diameter and 3.8-inch B-belt pitch diameter
• Weighs 4.05 pounds — suitable for standard blower and fan drive assemblies

Compatibility

Designed as an OEM-style replacement or new-installation sheave for V-belt drive systems requiring a three-groove QD-bushed sheave with a P1 bushing style and a bore range of 0.5 to 1.75 inches. Compatible with standard A-section and B-section V-belts.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright with the drive system fully de-energized and locked out per OSHA lockout/tagout procedures. Verify that the selected P1 QD bushing matches the shaft diameter before mounting, and confirm sheave alignment with a straightedge or laser alignment tool to minimize belt wear and vibration. Do not overtighten bushing fasteners beyond the bushing manufacturer's published specifications. Inspect belt tension and alignment after initial run-in.