Browning 1027358 Single Groove Sheave 1 in Bore 9.25 in Od

Product Description

The BROWNING 1027358 is a finished bore single groove sheave designed for belt-drive power transmission in HVAC, industrial fan, and blower applications. Cast from iron for durability, it accepts a 1-inch bore shaft and measures 9.25 inches in overall outside diameter. The sheave is machined to a finished bore, meaning no additional boring or bushing is required before installation. A pitch diameter of 9.0 inches is rated for Type 4L or A belts, making it a direct-fit component for standard V-belt drive assemblies. Licensed HVAC technicians, millwrights, and mechanical contractors typically source this sheave for belt-drive fan and blower setups in rooftop units, air handlers, and ventilation systems.

This sheave is suited for single-groove V-belt drive configurations in light commercial and residential HVAC equipment, as well as general-purpose industrial belt-drive systems. It is commonly installed on fan shafts in air handling units, evaporative coolers, centrifugal blowers, and exhaust fans. The finished bore and standard V-belt groove profile allow straightforward shaft installation with a standard key and setscrew arrangement. Type 3L belts are also compatible, with a pitch diameter of 8.66 inches for that belt cross-section.

Key Features

• Finished 1-inch bore — no additional machining required before installation
• Single groove design for standard V-belt drive configurations
• Compatible with Type 4L or A belts at a 9.0-inch pitch diameter
• Compatible with Type 3L belts at an 8.66-inch pitch diameter
• Cast iron construction for rigidity and long service life in rotating equipment
• 0.75-inch groove width suits standard V-belt profiles

Compatibility

Designed as an OEM-style replacement or new-install sheave for single-groove V-belt drive systems using Type 4L, A, or 3L belts. No specific model compatibility data was provided for this part.

Installation Notes

Installation should be performed by a qualified HVAC technician, millwright, or mechanical contractor. De-energize and lock out the drive system before removing or installing any sheave. Align the sheave and mating pulley carefully with a straightedge before tensioning the belt to avoid premature wear on the belt and bearing. Verify shaft diameter and keyway dimensions match the finished bore before pressing the sheave onto the shaft.