U.s. Tsubaki 40B20F-1D Finished Bore Sprocket 20T 1/2in

Product Description

The U.S. TSUBAKI 40B20F-1D is a finished bore sprocket designed for use with ANSI No. 40 roller chain in power transmission applications. It features 20 teeth, a 1/2 inch chain pitch, and a maximum bore diameter of 1-1/4 inches, making it ready for direct shaft mounting without additional machining. The 3.46 inch outside diameter and steel construction deliver reliable performance in both light industrial and mechanical drive systems. This sprocket is installed by maintenance mechanics and industrial technicians in conveyor, drive, and general power transmission assemblies.

This finished bore sprocket is suited for ANSI No. 40 chain drive systems in residential, commercial, and light industrial settings. Typical applications include conveyor lines, agricultural equipment, packaging machinery, and general-purpose drive trains where a pre-bored, ready-to-mount sprocket reduces setup time. The steel construction handles moderate loads and standard operating environments without requiring a custom-bored hub.

Key Features

• Finished bore design allows direct shaft installation without additional machining
• Compatible with ANSI No. 40 roller chain at 1/2 inch pitch
• 20-tooth count provides balanced speed and torque ratio in standard drive configurations
• 3.46 inch outside diameter suits compact drive assemblies
• Steel construction offers durability in moderate-load power transmission applications

Compatibility

Designed as a direct-mount finished bore sprocket for ANSI No. 40 roller chain with a 1/2 inch pitch. Fits shafts up to 1-1/4 inches in diameter.

Installation Notes

Installation should be performed by a qualified maintenance mechanic or industrial technician. Disconnect and lock out all power to the drive system before beginning sprocket replacement or installation. Verify shaft diameter does not exceed the 1-1/4 inch maximum bore before mounting, and ensure proper chain alignment and tension after installation to prevent premature wear.