Browning 1026426 Single Groove Sheave 3.95in Od Cast Iron

Product Description

The BROWNING 1026426 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. It features a 0.75 inch finished bore and a 3.95 inch outer diameter, with a cast iron construction that provides durability under continuous load. The bore is finished to size, meaning no additional machining is required before installation. This sheave is suited for use with 4L or A-type belts, with a corresponding pitch diameter of 3.7 inches, as well as 3L-type belts at a pitch diameter of 3.36 inches. HVAC technicians and mechanical contractors install this component on blower assemblies, fan drives, and pump drive systems.

This sheave is appropriate for single-groove V-belt drive configurations in residential and light commercial equipment. Typical installations include belt-driven blower wheels, condenser fan assemblies, and pump drives where precise pulley sizing is required to maintain target RPM and airflow. The 1.16 inch length through bore ensures adequate belt tracking and shaft engagement in standard shaft configurations.

Key Features

• Finished bore at 0.75 inches — no additional machining required
• 3.95 inch outer diameter with 3.7 inch pitch diameter for 4L and A-type belts
• Compatible with 3L-type belts at 3.36 inch pitch diameter
• Cast iron construction for wear resistance and dimensional stability
• Single groove design for straightforward single-belt drive layouts
• 1.16 inch length through bore for secure shaft engagement

Compatibility

Designed as an OEM-style replacement sheave for single-groove V-belt drive systems using 4L, A-type, or 3L V-belts on 0.75 inch shafts.

Installation Notes

Installation is performed by HVAC technicians or mechanical contractors. Disconnect and lock out all power to the drive system before removing or installing any sheave or belt. Confirm shaft diameter matches the 0.75 inch finished bore before mounting, and verify belt type and drive alignment after installation. Follow applicable OSHA guarding requirements for exposed belt and pulley assemblies after service is complete.