Browning 1026616 Single Groove Sheave 0.875 in Bore Cast Iron

Product Description

The BROWNING 1026616 is a finished bore, single groove V-belt sheave designed for use in belt-driven blower, fan, and motor drive applications. Machined from cast iron, it features a 0.875 inch bore diameter and a 4.75 inch outer diameter. The pitch diameter measures 4.5 inches for 4L or A-series belts and 4.16 inches for 3L-series belts. The through-bore length is approximately 1-5/32 inches. At 1.75 pounds, this sheave suits both new installations and direct replacement work on HVAC air handlers, rooftop units, and belt-driven ventilation equipment. Installation is typically performed by licensed HVAC technicians or millwrights.

This sheave is suited for residential and light commercial belt-drive systems where a single groove, A-series or 4L-series V-belt is used. Common applications include furnace blower assemblies, air handler fan drives, exhaust fan drives, and general-purpose motor-to-shaft power transmission. The finished bore accepts a 0.875 inch shaft directly without additional machining, making it a straightforward drop-in replacement or new-build component for standard belt-drive configurations.

Key Features

• Finished 0.875 inch bore — no additional machining required for standard 0.875 inch motor or blower shafts
• Single groove design accepts 3L, 4L, or A-series V-belts
• 4.75 inch outer diameter with 4.5 inch pitch diameter for 4L or A-series belts
• 4.16 inch pitch diameter for 3L-series belts
• Cast iron construction for durability and dimensional stability under load
• Compact 1.75 pound weight suitable for residential and light commercial drives

Compatibility

Designed as an OEM-style replacement or new-installation sheave for belt-driven blower and fan assemblies using 3L, 4L, or A-series V-belts with a 0.875 inch shaft bore.

Installation Notes

Installation is performed by a licensed HVAC technician or qualified mechanic. Disconnect and lock out all electrical power to the unit before removing or installing the sheave. Secure the sheave to the shaft with an appropriately sized set screw or key per the drive system design, and verify belt tension and sheave alignment with a straightedge before returning the unit to service. Do not operate the drive without a properly tensioned belt and verified sheave alignment.