Browning 1128727 Finished Bore Sprocket 13T 5/8 in Pitch

Product Description

The BROWNING 1128727 is a finished bore sprocket designed for roller chain drive applications in light to medium industrial and mechanical systems. It features 13 teeth cut for No. 50 chain with a 5/8 inch pitch, a 1-1/4 inch finished bore diameter, and a hub diameter of 2.17187 inches. The outside diameter measures 2.91 inches. Constructed from steel, this sprocket delivers the rigidity and wear resistance required for conveyor drives, pump drives, and similar power-transmission assemblies. Licensed millwrights, maintenance mechanics, and industrial technicians are the typical installers of this component.

This sprocket is suited for roller chain drive systems that run No. 50 chain at 5/8 inch pitch. It is commonly used in light industrial equipment, agricultural machinery, conveyor lines, and mechanical drive trains where a finished bore hub eliminates the need for secondary machining. The 1-1/4 inch bore accepts standard shaft sizes and is ready to install with a keyway and set screw arrangement typical of finished bore sprockets in this class.

Key Features

• 13-tooth finished bore sprocket machined for No. 50 roller chain
• 5/8 inch chain pitch for compatibility with standard No. 50 chain trade size
• 1-1/4 inch finished bore diameter — no secondary machining required
• 2.91 inch outside diameter with 2.17187 inch hub diameter
• Steel construction for durability in power-transmission drive applications

Compatibility

Designed as an OEM-style replacement or direct-fit sprocket for mechanical drive systems using No. 50 roller chain at 5/8 inch pitch with a 1-1/4 inch shaft diameter.

Installation Notes

Installation should be performed by a qualified millwright or maintenance mechanic. De-energize and lock out the drive system before removing or installing any sprocket. Ensure the shaft and bore are clean and free of burrs before seating the sprocket, and verify proper chain alignment and tension after installation to prevent premature wear. Follow applicable ANSI B29.1 chain drive standards and facility lockout/tagout procedures.