Browning 1033422 Two Groove Sheave 1.125in Bore 3.75in Od

Product Description

The BROWNING 1033422 is a finished bore two groove sheave designed for use with V-belt drive systems in HVAC, industrial, and mechanical power transmission applications. It features a 1.125 inch bore diameter and a 3.75 inch outer diameter, with a belt pitch diameter of 3.2 inches for Type 4L or A belts. The sheave is cast from iron, providing the rigidity and wear resistance needed for reliable continuous-duty operation. At 3.1 pounds, it is a compact, ready-to-install component suited for installation by HVAC technicians and mechanical contractors on blower and fan drive assemblies.

This sheave is used in belt-driven blower and fan applications, particularly in residential and light commercial HVAC air handling units, exhaust fans, and similar rotating equipment. The finished bore means no additional machining is required before installation. The two groove configuration accommodates dual V-belt setups, which are common in higher-load blower assemblies where a single belt would be insufficient or where redundancy in the drive train is preferred.

Key Features

• Finished bore at 1.125 inches — no machining required prior to installation
• Two groove design accommodates dual Type 4L or A V-belts
• Belt pitch diameter of 3.2 inches for Type 4L or A belts
• Cast iron construction for rigidity and long service life in continuous-duty applications
• Overall length through bore of 1-15/32 inches
• Lightweight at 3.1 pounds for ease of handling during installation

Compatibility

Designed as an OEM-style replacement or direct-fit sheave for belt-driven blower and fan assemblies using Type 4L or A V-belts with a 1.125 inch bore shaft.

Installation Notes

Installation should be performed by a qualified HVAC technician or mechanical contractor. Disconnect and lock out all electrical power to the unit before servicing the drive assembly. Confirm shaft diameter matches the 1.125 inch finished bore before mounting, and torque the set screw or bushing fasteners according to the equipment manufacturer's specifications. Inspect belt tension and alignment after installation to prevent premature wear on both the sheave grooves and the belts.