Browning 1078906 Type Q Split Taper Sprocket Bushing

Product Description

The BROWNING 1078906 is a Type Q split taper bushing designed for use with split taper sprockets and sheaves in power transmission applications. Machined from iron, this Q1 series bushing features a 1.25-inch bore with a 1/4-inch keyway width and 1/8-inch keyway depth, providing a secure, keyed shaft connection. The outside diameter measures 4.125 inches. Maximum rated torque is 348 inch-pounds, making it well-suited for moderate-load drive system assemblies. Installation and removal are handled by licensed millwrights, maintenance mechanics, or industrial technicians working on belt and chain drive systems.

This bushing is used in industrial and commercial power transmission setups where split taper mounting is specified. Split taper bushings allow for quick installation and removal without damaging the sprocket or sheave bore. Typical applications include conveyor drives, pump drives, fan assemblies, and general industrial machinery where a 1.25-inch shaft with keyway engagement is required. The 3/8 x 1-1/4 thread size is used for the mounting and removal screws standard to this bushing type.

Key Features

• Type Q, Q1 series split taper bushing for fast, repeatable installation and removal
• 1.25-inch bore with 1/4-inch keyway width and 1/8-inch keyway depth for keyed shaft fitment
• 4.125-inch outside diameter suits a range of split taper sprocket and sheave bores
• Maximum torque rating of 348 inch-pounds for moderate-load power transmission applications
• Iron construction provides durability in industrial drive system environments
• 3/8 x 1-1/4 thread size matches standard Q1 mounting and jack screw hardware

Compatibility

Designed for use with split taper sprockets and sheaves requiring a Type Q, Q1 series bushing with a 1.25-inch bore.

Installation Notes

Installation is typically performed by a qualified millwright or mechanical technician. De-energize and lock out the drive system fully before bushing installation or removal per OSHA lockout/tagout procedures. Clean the bushing bore, shaft, and mating sprocket or sheave taper surfaces before assembly. Do not use impact tools to drive the bushing into the hub; use the provided cap screws tightened in an alternating sequence to seat the taper correctly.