Browning 1880210 Finished Bore Sprocket 25T 1/2in Pitch

Product Description

The BROWNING 1880210 is a finished bore roller chain sprocket designed for use with ANSI 40 chain. It features 25 teeth and a 1/2 inch chain pitch, with a pre-machined 1-1/4 inch bore diameter that accepts a shaft without additional boring or machining. The hub diameter measures 3.25 inches and the outside diameter is 4.26 inches. Constructed from steel, this sprocket is suited for industrial drive and conveyor applications where a reliable, ready-to-install sprocket is required. Mechanical contractors, millwrights, and industrial maintenance technicians are the typical installers.

This sprocket is intended for use in power transmission drive systems using ANSI No. 40 roller chain with a 1/2 inch pitch. It fits applications in commercial and light industrial settings, including conveyor systems, material handling equipment, and general mechanical drive assemblies. The finished bore design means no secondary machining is required when the shaft diameter matches the specified 1-1/4 inch bore. This makes it a direct drop-in replacement in MRO and equipment rebuild scenarios where downtime must be minimized.

Key Features

• Finished bore at 1-1/4 inches — ready to install on matching shaft diameter without additional machining
• 25-tooth count with 1/2 inch pitch matches ANSI No. 40 roller chain
• Steel construction for durability in industrial power transmission applications
• 3.25 inch hub diameter provides solid engagement surface and keyway support
• 4.26 inch outside diameter suits standard drive configurations for this tooth count and pitch

Compatibility

Designed as an OEM-style replacement or direct fitment sprocket for ANSI No. 40 roller chain drive systems requiring a 25-tooth, 1/2 inch pitch finished bore sprocket with a 1-1/4 inch shaft bore.

Installation Notes

Installation is typically performed by a millwright or qualified mechanical technician. Disconnect and lock out all power to the drive system before removing or installing the sprocket. Ensure the shaft diameter matches the 1-1/4 inch finished bore exactly before installation, and verify keyway and setscrew alignment according to the equipment manufacturer's specifications. Do not force the sprocket onto an oversized shaft.