Browning 1042407 BK34H Qd Bushed V Belt Sheave 1 Groove

Product Description

The BROWNING 1042407 is a BK34H quick-detachable (QD) bushed V-belt sheave designed for single-groove V-belt drive systems. It accepts A and B series belts, with a belt pitch diameter of 2.8 inches for A-series and 3.2 inches for B-series. The outside diameter measures 3.55 inches. Bore range runs from 3/8 inch minimum to 1-1/2 inch maximum, accommodating the H-style QD bushing for fast, accurate shaft mounting. Cast iron construction provides durability in mechanical drive applications. HVAC and industrial technicians install this sheave on fan and blower assemblies where compact, adjustable-bore sheaves are required.

This sheave suits residential and light commercial HVAC blower drives, exhaust fans, and general mechanical power transmission setups. It is compatible with standard A and B section V-belts and fits any shaft within the bore range when the appropriate H-style QD bushing is used. The single-groove design makes it well-suited for straightforward one-belt drive configurations on air handlers, furnace blowers, and similar equipment.

Key Features

• Single-groove design accepts A and B series V-belts
• Outside diameter of 3.55 inches for compact drive applications
• Belt pitch diameter of 2.8 inches (A-series) and 3.2 inches (B-series)
• Bore range from 3/8 inch to 1-1/2 inch via H-style QD bushing
• Cast iron construction for wear resistance and long service life
• QD bushing mount allows quick installation and removal without special tooling

Compatibility

Designed for use with A and B series V-belts and H-style QD bushings. Suitable as an OEM-style or replacement sheave on single-belt blower and fan drive assemblies where a 3.55-inch OD, single-groove sheave with H bushing mount is specified.

Installation Notes

Installation and removal should be performed by a qualified mechanical or HVAC technician. Disconnect and lock out all electrical power to the driven equipment before beginning work. The QD bushing must be sourced separately and matched to the shaft diameter before mounting. Verify belt tension and sheave alignment after installation to prevent premature belt and bearing wear.