Browning 1028406 Single Groove Sheave 4-3/4 in Od

Product Description

The BROWNING 1028406 is a finished bore single groove sheave designed for use in belt-drive power transmission systems. Machined from cast iron, this sheave features a 7/8 inch bore diameter and a 4-3/4 inch outside diameter, with an overall length through the bore of 1-5/32 inches. It is compatible with 4L and A series V-belts, providing a reliable drive interface for fans, blowers, and other rotating equipment common in HVAC and industrial applications. Finished bore construction means the bore is ready for direct shaft installation without additional machining.

This sheave is suited for residential and light commercial HVAC applications where a single-groove belt drive connects a motor to a fan or blower assembly. It is also used in general industrial power transmission setups requiring a compact, single-groove configuration. The 4-3/4 inch OD and A or 4L belt compatibility make it a common replacement component in belt-drive air handling units and similar equipment. Licensed HVAC technicians and millwrights typically handle this replacement as part of scheduled maintenance or belt-drive service.

Key Features

• Finished bore ready for direct shaft installation at 7/8 inch bore diameter
• Cast iron construction for durability in belt-drive applications
• Single groove design compatible with 4L and A series V-belts
• 4-3/4 inch outside diameter with a 4.0 inch pitch diameter for A and 4L belt types
• Overall length through bore of 1-5/32 inches for compact installation

Compatibility

Designed as an OEM-style replacement single groove sheave compatible with 4L and A series V-belts in belt-drive power transmission systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or millwright. De-energize and lock out the equipment at the disconnect before beginning any belt-drive service. Ensure the shaft diameter matches the 7/8 inch finished bore before installation, and verify proper sheave alignment with a straightedge to minimize belt wear. Consult applicable mechanical codes and equipment manufacturer documentation for torque and alignment specifications.