Browning 1026541 Single Groove Sheave 4.45 in Od Cast Iron

Product Description

The BROWNING 1026541 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial fan, and mechanical power transmission applications. Constructed from cast iron, this sheave features a 0.75 inch bore diameter and a 4.45 inch outer diameter. The through-bore length measures 1-5/32 inches, and the groove is sized to accept standard B, A, 4L, and 3L profile belts. At 1.65 pounds, this is a compact, durable component suited for light-to-medium duty belt drive installations maintained by HVAC technicians and mechanical service professionals.

This sheave is typically used in residential and light commercial belt-driven fan and blower assemblies, including supply and return air blower sections in air handling units and furnace systems. It is well suited for retrofit or replacement applications where the original sheave has worn grooves, a damaged bore, or incorrect pitch diameter. The finished bore accepts a 0.75 inch shaft directly without additional machining.

Key Features

• Finished bore eliminates on-site machining — ready to install on a 0.75 inch shaft
• Single groove design accepts B, A, 4L, and 3L profile V-belts
• Cast iron construction provides durability in continuous-duty belt drive service
• 4L or A belt pitch diameter of 4.2 inches; 3L belt pitch diameter of 3.86 inches
• B belt pitch diameter of 4.6 inches
• Compact 1.65 pound weight suits space-constrained blower compartments

Compatibility

Designed as an OEM-style replacement single groove sheave for residential and light commercial belt-driven blower and fan assemblies using standard B, A, 4L, or 3L profile V-belts on a 0.75 inch shaft.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical service professional. Disconnect and lock out all electrical power to the unit before removing or installing any sheave or belt components. Ensure the shaft and bore are clean and free of burrs before seating the sheave, and verify belt tension and alignment after installation per the equipment manufacturer guidelines. A matched belt and sheave pitch diameter must be confirmed before final assembly to prevent premature wear.