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The U.S. TSUBAKI 40B15FH is a finished bore sprocket designed for use with ANSI No. 40 roller chain. It features 15 teeth, a 1/2 inch chain pitch, and a maximum bore diameter of 1/2 inch. Machined from steel, this sprocket delivers reliable torque transmission in compact drive applications. The finished bore design means the bore is already machined to final size, reducing installation time compared to stock bore alternatives. It is sized for light-to-medium duty power transmission systems and suited for installation by millwrights, maintenance mechanics, and industrial technicians.
This sprocket fits standard ANSI No. 40 roller chain applications across a wide range of industrial and light commercial settings. Typical installations include conveyor systems, agricultural equipment, small machinery drives, and general-purpose power transmission setups. The 1/2 inch pitch sizing makes it a common choice for compact drive assemblies where a pre-finished bore simplifies direct shaft mounting without additional machining.
Designed as an OEM-style replacement or new-installation sprocket for ANSI No. 40 roller chain drive systems requiring a 15-tooth finished bore sprocket with 1/2 inch pitch.
Installation is typically performed by a qualified millwright or maintenance mechanic. Disconnect and lock out all power to the drive system before mounting or removing sprockets. Ensure the shaft diameter does not exceed the maximum bore diameter of 1/2 inch before installation. Align the sprocket carefully with mating components to prevent premature chain and sprocket wear.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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