Browning 1127992 Finished Bore Sprocket 12T 1/2in Pitch

Product Description

The BROWNING 1127992 is a finished bore roller chain sprocket designed for use in mechanical drive and conveyor applications. Machined from steel, this 12-tooth sprocket is built for No. 40 roller chain running on a 1/2-inch pitch. The bore is fixed at 1/2 inch, making it a ready-to-install component with no secondary machining required. The outside diameter measures 2.17 inches and the hub diameter is 1.609 inches. At 0.5 pounds, it is a compact, lightweight sprocket suitable for light-duty to moderate-duty drive systems. Installation and replacement are handled by mechanical and maintenance technicians.

This sprocket is used in industrial and light commercial power transmission setups where No. 40 roller chain is the specified drive chain. Typical applications include conveyor drives, pump drives, blower assemblies, and general machinery requiring a 1/2-inch pitch chain interface. The finished bore eliminates the need for on-site boring, making it well suited for replacement and retrofit scenarios where the shaft diameter is confirmed at 1/2 inch prior to ordering.

Key Features

• 12 teeth for use with No. 40 roller chain at 1/2-inch pitch
• Finished bore at 1/2 inch — no secondary machining needed
• Steel construction for durability in mechanical drive environments
• Outside diameter of 2.17 inches suits compact drive configurations
• Hub diameter of 1.609 inches provides stable shaft engagement
• Lightweight at 0.5 pounds for easy handling and installation

Compatibility

Designed as an OEM-style replacement or aftermarket sprocket for mechanical drive systems using No. 40 roller chain with 1/2-inch pitch and a 1/2-inch shaft bore.

Installation Notes

Installation should be performed by a qualified mechanical technician. Disconnect and lock out all power to the drive system before removing or installing any sprocket. Confirm shaft diameter matches the 1/2-inch finished bore before installation. Verify chain alignment and tension after mounting to prevent premature wear on the chain and sprocket teeth.