Browning 1043116 2BK90H 2 Groove Qd V Belt Sheave

Product Description

The BROWNING 1043116, model 2BK90H, is a two-groove, QD-bushed V belt sheave designed for use with A and B cross-section V belts. It features an 8.75-inch outside diameter, an 8.0-inch A-series belt pitch diameter, and an 8.4-inch B-series belt pitch diameter. The H-style QD bushing accepts bore diameters from 0.375 inches up to 1.5 inches, allowing flexible shaft fitment without machining. Cast iron construction provides durability in high-cycle drive applications. HVAC technicians, millwrights, and mechanical contractors install this sheave on blower and fan drive assemblies where a two-belt configuration is required for load distribution or redundancy.

This sheave is suited for light industrial and commercial HVAC applications, including belt-driven supply and return air fan assemblies, cooling tower drives, and similar V belt power transmission systems. The QD bushing design allows for straightforward installation and removal on standard keyed shafts, making it practical for scheduled maintenance cycles where sheave removal is routine. Both A and B belt profiles are supported, giving the installer flexibility when specifying belt cross-section for a given drive design.

Key Features

• Two-groove design supports dual A or B cross-section V belts for balanced load distribution
• 8.75-inch outside diameter with 8.0-inch A-series and 8.4-inch B-series belt pitch diameters
• H-style QD bushing accepts bore range from 0.375 inches to 1.5 inches
• Cast iron construction for durability in continuous-duty drive applications
• QD bushing mount enables fast sheave swap without full shaft disassembly

Compatibility

Designed as an OEM-style replacement or new-installation sheave for belt-driven fan and blower assemblies using A or B cross-section V belts with an H-style QD bushing mount.

Installation Notes

Installation and removal should be performed by a qualified millwright or HVAC mechanical technician. Disconnect and lock out all power to the drive system before handling the sheave or bushing. Ensure the QD bushing bore, key, and keyway are clean and free of burrs before assembly, and torque all bushing fasteners evenly to manufacturer specifications. After installation, verify belt tension and sheave alignment with a straightedge or laser alignment tool before returning the drive to service.