Browning 1027515 Single Groove Sheave 0.75 in Bore

Product Description

The BROWNING 1027515 is a finished bore single groove sheave designed for V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. Cast from iron for durability, this sheave features a 0.75 inch bore diameter and an 11.4 inch belt pitch diameter, making it suited for standard B-section and A-section V-belts. The hub length through bore measures 1-15/32 inches. Licensed HVAC technicians, millwrights, and mechanical contractors install this type of component when replacing or building belt-driven blower, fan, or pump assemblies.

This sheave fits single-groove V-belt drive configurations commonly found in air handling units, belt-driven blowers, and light industrial machinery. It accommodates belt pitch diameters of 11.0 inches for 4L or A-type belts and 10.66 inches for 3L-type belts. The finished bore is ready to install on a 0.75 inch shaft, and the overall sheave width through bore is 1-15/32 inches. Typical applications include residential and light commercial HVAC fan drive systems requiring a reliable, fixed-bore cast iron pulley.

Key Features

• Single groove design accepts standard A-section, 4L, and 3L V-belts
• Finished 0.75 inch bore fits directly onto 0.75 inch drive shafts without additional machining
• 11.4 inch outside diameter with 11.0 inch pitch diameter for A and 4L belt types
• Cast iron construction provides strength and wear resistance in continuous-duty drive applications
• Hub length through bore of 1-15/32 inches for secure shaft engagement

Compatibility

Designed as an OEM-style replacement single groove sheave for belt-driven fan and blower assemblies requiring a 0.75 inch bore, 11.4 inch OD cast iron pulley compatible with A-section, 4L, and 3L V-belts.

Installation Notes

Installation is typically performed by licensed HVAC technicians or qualified mechanical contractors. Before servicing belt drive assemblies, de-energize and lock out the equipment per NFPA 70E and local electrical codes. Verify shaft diameter matches the 0.75 inch finished bore before installation. Inspect the mating V-belt for wear and proper tension after installing the sheave, and confirm belt alignment across both sheaves before returning the system to service.