Browning 1026293 Single Groove Sheave 5/8 Bore 3.45 Od

Product Description

The BROWNING 1026293 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. The sheave features a 5/8 inch finished bore diameter and a 3.45 inch outer diameter, with a groove width of 21/32 inches. Cast iron construction provides durable wear resistance under continuous belt loading. This sheave is installed by HVAC technicians, millwrights, and mechanical contractors on blower drives, fan assemblies, and belt-driven equipment where precise pitch alignment is required for efficient power transfer.

This sheave is suited for residential and light commercial HVAC fan and blower drive applications, as well as general industrial belt drive setups. It accepts Type 3L, 4L, and A profile V-belts, making it a versatile fit for common single-belt drive configurations. The finished bore is ready for direct shaft installation at the stated 5/8 inch diameter, eliminating the need for additional machining before mounting.

Key Features

• Finished bore at 5/8 inch — no machining required for direct shaft installation
• Single groove design accepts Type 3L, 4L, and A profile V-belts
• 3.45 inch outer diameter with 21/32 inch groove width
• Belt pitch diameter for Type 4L or A belt: 3.2 inches
• Belt pitch diameter for Type 3L belt: 2.86 inches
• Cast iron construction for durability under continuous belt load

Compatibility

Designed as an OEM-style replacement or aftermarket single groove sheave for residential and light commercial belt drive systems using Type 3L, 4L, or A profile V-belts on 5/8 inch shafts.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out power to the drive system before removing or installing any sheave or belt. Verify shaft diameter matches the 5/8 inch finished bore before mounting, and confirm belt profile compatibility before tensioning. Proper belt tension and sheave alignment are critical to belt life and drive efficiency — use a straightedge or laser alignment tool across sheave faces before finalizing installation.