Browning 1129428 Finished Bore Sprocket 20 Teeth 3/4 in

Product Description

The BROWNING 1129428 is a finished bore sprocket designed for roller chain drive systems using 60-series chain with a 3/4 inch pitch. Machined from steel, this sprocket features 20 teeth, a 1 inch bore diameter, a hub diameter of 3.891 inches, and an outside diameter of 5.19 inches. The finished bore is ready for installation without additional machining. It is suited for industrial power transmission applications including HVAC equipment drives, conveyor systems, and mechanical power transfer assemblies. Licensed mechanical and industrial technicians typically handle installation in commercial and light industrial settings.

This sprocket is intended for use with ANSI 60-series roller chain running a 3/4 inch pitch. It fits drive shaft applications requiring a 1 inch bore. Typical install scenarios include fan drive assemblies, pump drives, and general-purpose power transmission setups found in commercial mechanical systems. The steel construction provides durability in environments with moderate loads and normal operating temperatures. Because the bore is already finished to 1 inch, no lathe work or broaching is required before mounting.

Key Features

• Finished 1 inch bore — no additional machining required
• 20 teeth configured for ANSI 60-series roller chain
• 3/4 inch chain pitch for standard 60-series drive systems
• Steel construction for durability in power transmission applications
• Outside diameter of 5.19 inches with a hub diameter of 3.891 inches
• Packaged quantity of 1, minimum order quantity of 1

Compatibility

Designed for use with ANSI 60-series roller chain at 3/4 inch pitch. Suitable as an OEM-style replacement or new-installation sprocket for drive shafts with a 1 inch diameter in industrial and commercial mechanical power transmission systems.

Installation Notes

Installation is typically performed by a qualified mechanical or industrial technician. De-energize and lock out the drive system before removing any existing sprocket or chain. Verify shaft diameter and keyway dimensions before mounting. Align the sprocket carefully with mating components to minimize chain wear and ensure proper load distribution.