Browning 1078930 Type Q Split Taper Bushing 1.375 Bore

Product Description

The BROWNING 1078930 is a Type Q split taper bushing designed for use with split taper sprockets and sheaves in mechanical power transmission systems. Manufactured from iron, this Q1 series bushing features a 1.375 inch bore diameter and an outside diameter of 4.125 inches. The keyway measures 5/16 inches wide by 5/32 inches deep, providing positive key engagement for reliable torque transfer up to 348 inch-pounds. The split taper design allows for easy installation and removal on taper-bored hubs without requiring specialized pulling equipment. HVAC and industrial maintenance technicians install this bushing type on belt-drive blower assemblies, fan systems, and general power transmission applications.

The BROWNING 1078930 is suited for residential and commercial mechanical systems where split taper sheaves or sprockets are used. The Q bushing series is a standardized platform, making this a direct fit for taper-bored split-hub components rated for the Q bushing series. Typical applications include belt-driven blower assemblies, pump drives, and conveyor systems where repeatable shaft mounting and clean removal are required. The 3/8 x 1-1/4 inch thread size is used with the bushing's draw-up fasteners during installation.

Key Features

• Type Q split taper design allows draw-up installation and clean removal from taper-bored hubs
• 1.375 inch bore with 5/16 inch x 5/32 inch keyway for positive shaft engagement
• Maximum torque rating of 348 inch-pounds
• Iron construction for durability in industrial and mechanical environments
• 4.125 inch outside diameter fits standard Q1 series split taper components
• 3/8 x 1-1/4 inch thread size for draw-up fasteners

Compatibility

Designed for use with split taper sprockets and sheaves accepting a Type Q series bushing with a 1.375 inch bore.

Installation Notes

Installation is typically performed by a qualified mechanical or HVAC technician. De-energize all equipment and lock out the drive system before beginning work. Insert the bushing into the taper-bored hub, align the keyway, and draw up the bushing using the provided thread holes with the appropriate fasteners — do not hammer the bushing into place. Consult the equipment manufacturer's documentation and applicable ANSI standards for proper assembly sequence and fastener engagement.