80 Chain A Plate Sprocket – Size Chart

Posted on July 16, 2026 in FAQ, Size Chart

80 Chain A Plate Sprockets are flat, hubless sprockets designed for use with #80 roller chain. A Type A plate sprocket does not have a hub, making it a simple and compact option for applications where the sprocket can be mounted, welded, adapted, or machined to fit the equipment.

#80 roller chain has a 1.000″ pitch, so 80A plate sprockets are built to match that chain pitch. When selecting an A plate sprocket, the most important details are the chain size, tooth count, outside diameter, bore requirements, and how the sprocket will be mounted in the application.

80 Chain A Plate Sprocket Size Chart

What Is an A Plate Sprocket?

A Type A plate sprocket is a flat sprocket without a hub. Because there is no hub, A plate sprockets are useful where space is limited, where the sprocket needs to be mounted to another component, or where the bore needs to be machined for a custom setup.

For #80 chain, the sprocket pitch matches the chain pitch of 1.000″. The tooth count changes the sprocket diameter, speed ratio, and chain wrap, which is why choosing the correct size matters.

Click Here – to learn how to measure the pitch of a roller chain with calipers.

Common Applications for 80A Plate Sprockets

80 Chain A Plate Sprockets are commonly used in conveyors, agricultural equipment, material handling systems, industrial machinery, repair work, OEM builds, and custom fabricated drive systems. They are a strong choice when a simple plate-style sprocket is needed and the mounting method is handled separately from the sprocket itself.

These sprockets are also helpful for machine shops and maintenance teams that need a blank or plain bore sprocket to modify for a specific shaft, weldment, fixture, or custom drive layout.