This is a ANSI #40 sprocket that is custom bored to 17mm fit our wheelchair motors. We use these in most of our chain driven robots with wheelchair motors. It is made of steel and comes with two set screws that fix it in place on the shaft. It also has a 6mm keyway that fits the key on the motor shaft.
This is a custom part. Please allow 2-4 days for shipping.
With it's wide hub and finished bore, this steel roller chain sprocket is ready to mount to a shaft.
100 pack of black UV resistant nylon with flexible tape section, pull tight and does not come undone. Length 4 inches.
Steel Machine Key 3/16" x 3/16", 3/4" long. These keys are economical with high strength and will fit 3/16" keyways.