Browning 1128859 Finished Bore Sprocket 16T 5/8in Pitch

Product Description

The BROWNING 1128859 is a finished bore roller chain sprocket designed for use with ANSI No. 50 chain at a 5/8 inch pitch. Machined from steel, this sprocket features 16 teeth, a 3/4 inch finished bore diameter, and a 2.578 inch hub diameter. The outside diameter measures 3.52 inches. The finished bore is ready for direct shaft installation without additional machining, making it a straightforward drop-in component for mechanical power transmission applications in HVAC, industrial, and equipment drive systems. Licensed millwrights, maintenance technicians, and mechanical contractors are the typical installers.

This sprocket is suited for light-to-medium duty roller chain drive assemblies using ANSI No. 50 chain. Common applications include conveyor drives, blower drives, pump drives, and other rotary power transmission setups where a standardized finished bore sprocket is required. Its steel construction makes it appropriate for both indoor and moderate-duty industrial environments. The fixed 3/4 inch bore means no secondary boring or bushing is required when the shaft diameter matches.

Key Features

• Finished bore eliminates need for additional machining before installation
• 16-tooth count suitable for standard gear ratio drive configurations
• Compatible with ANSI No. 50 roller chain at 5/8 inch pitch
• Steel construction for durability in mechanical drive applications
• Outside diameter of 3.52 inches fits common drive assembly envelopes

Compatibility

Designed for use with ANSI No. 50 roller chain with a 5/8 inch pitch. The finished bore diameter is fixed at 3/4 inch; verify shaft diameter before installation.

Installation Notes

Installation is typically performed by a licensed millwright or qualified maintenance technician. Disengage and lock out all power to the drive system before removing or installing any sprocket. Ensure the mating shaft is clean and free of burrs before pressing or keying the sprocket into position. Verify chain tension and sprocket alignment after installation per the equipment manufacturer's specifications.