Browning 1002278 Qd Bushed V Belt Sheave 2 Groove

Product Description

The BROWNING 1002278 is a two-groove, QD bushed V-belt sheave designed for power transmission applications in HVAC, industrial, and mechanical drive systems. The sheave has an outside diameter of 7.35 inches and accepts a Q1-style quick-detachable bushing with bore sizes ranging from 3/4 inch to 2-11/16 inches. It is compatible with A, B, and 5V belt trade sizes. Cast from iron for durability under continuous load, this sheave is installed by HVAC technicians and millwrights on belt-driven fans, blowers, and air handling units.

This sheave fits belt-driven blower and fan assemblies found in commercial and residential HVAC systems, as well as general industrial drive applications. The QD bushing design allows the sheave to be mounted and removed without specialty pullers, making it a practical choice for service and replacement work on rooftop units, air handlers, and centrifugal fans. The Q1 bushing style accommodates a wide bore range, making it adaptable to a variety of shaft sizes encountered in the field.

Key Features

• Two grooves accommodate A, B, and 5V belt trade sizes
• Outside diameter of 7.35 inches for precise drive ratio selection
• Belt pitch A diameter of 6.6 inches; belt pitch B diameter of 7.0 inches
• Q1-style QD bushing accepts bore diameters from 3/4 inch to 2-11/16 inches
• Iron construction for strength and wear resistance under continuous operation
• Quick-detach bushing design simplifies installation and removal in the field

Compatibility

Compatible with A, B, and 5V trade-size V-belts. Accepts Q1-style quick-detachable bushings with bore diameters from 3/4 inch to 2-11/16 inches. Designed as a QD bushed sheave replacement for belt-driven blower and fan drive systems requiring a two-groove, 7.35-inch outside diameter sheave.

Installation Notes

Installation should be performed by a qualified HVAC technician or millwright. Disconnect and lock out all power to the drive system before removing or installing sheaves. Confirm the Q1 bushing bore matches the shaft diameter before final assembly. After installation, verify belt tension and alignment per the drive manufacturer guidelines before returning the unit to service.