Browning 1043025 2BK52H Qd Bushed V-belt Sheave 2 Groove

Product Description

The BROWNING 1043025, also identified as the 2BK52H, is a two-groove, quick-detachable (QD) bushed V-belt sheave designed for power transmission applications in HVAC, industrial, and mechanical systems. It accepts an H-style QD bushing and accommodates bore diameters from 3/8 inch to 1-1/2 inches, giving technicians flexibility when matching shaft sizes. The outside diameter measures 4.95 inches, with a belt pitch diameter of 4.2 inches for A-section belts and 4.6 inches for B-section belts. Cast from iron, this sheave is built for the rotational loads common in fan, blower, and pump drive assemblies.

This sheave is suited for residential and light commercial HVAC blower assemblies, cooling tower fan drives, exhaust fan systems, and general industrial V-belt drive setups. Its two-groove configuration allows dual-belt drive arrangements that distribute load and reduce the risk of belt slippage under higher torque conditions. The H-bushing interface is a widely used QD standard, making field installation and removal straightforward during scheduled maintenance or equipment retrofit work. Compatible belt trade sizes are A-section and B-section V-belts.

Key Features

• Two-groove design supports dual A-section or B-section V-belt configurations
• H-style QD bushing interface allows tool-assisted, concentric shaft mounting and clean removal
• Outside diameter of 4.95 inches with A-section belt pitch diameter of 4.2 inches
• Bore range of 3/8 inch to 1-1/2 inches accommodates a wide variety of shaft sizes
• Iron construction provides durability in continuous-duty blower and fan drive service

Compatibility

Designed for use with A-section and B-section V-belts in QD H-bushing sheave drive systems. Typical fitment includes V-belt drive assemblies on HVAC air handlers, blowers, exhaust fans, and light industrial equipment requiring a two-groove sheave with an H-style QD bushing.

Installation Notes

Installation should be performed by a qualified mechanic or HVAC technician. Disconnect and lock out all power to the drive system before mounting or removing the sheave. The H-style QD bushing must be sourced separately and torqued evenly in a cross-pattern sequence per the bushing manufacturer specifications. Verify belt tension and sheave alignment with a straightedge or laser alignment tool before returning the drive to service.