Browning 1078989 Type Q Split Taper Sprocket Bushing

Product Description

The BROWNING 1078989 is a Type Q split taper sprocket bushing designed for use with split taper sprockets and sheaves in mechanical power transmission systems. With a bore diameter of 1.6875 inches and a keyway measuring 3/8 inches wide by 3/16 inches deep, this bushing provides a secure, keyed connection between a shaft and the driven component. The outside diameter is 4.125 inches, and the bushing is rated for a maximum torque of 348 inch-pounds. Constructed from iron, it is built to handle the demands of industrial drive applications. Installation and removal are simplified by the split taper design. Licensed millwrights, maintenance mechanics, and industrial service technicians are the typical installers.

This bushing is suited for use in belt drive and chain drive assemblies where split taper sprockets or sheaves are mounted to shafts in the 1-11/16 inch bore range. Common applications include conveyor systems, HVAC blower assemblies, pump drives, and general industrial machinery. The Q bushing series is a standardized taper bushing profile, making it a direct fit for any split taper hub bored to the Q specification. Thread size for the bushing screws is 3/8 x 1-1/4.

Key Features

• Split taper design allows installation and removal without disturbing adjacent components
• 1.6875 inch bore with 3/8 inch by 3/16 inch keyway for positive shaft engagement
• 4.125 inch outside diameter fits Q-series split taper sprocket and sheave hubs
• Maximum torque rating of 348 inch-pounds
• Iron construction for durability in industrial drive environments
• 3/8 x 1-1/4 thread size for mounting screws

Compatibility

Designed for use with split taper sprockets and sheaves requiring a Type Q bushing with a 1-11/16 inch bore.

Installation Notes

Power down and lock out the drive system completely before removing or installing this bushing. Seat the bushing evenly in the hub by alternately tightening the mounting screws in a cross pattern to avoid cocking the taper. Do not hammer the bushing into place, as this can damage the taper seat or hub threads. This work is typically performed by a licensed millwright or qualified maintenance mechanic following applicable machinery safety standards.