Bicycle sprocket and chain sizing


New Member
Jun 17, 2019
I am trying to size a Sprocket and Chain but I don't see the what the designator is for a Typical Bicycle Chain. I am building a Toy Pedal Tractor and I have a bicycle Sprocket (SR Suntour XCT JR Crankset) and I am trying to find a Sprocket with a hub for the rear axle but most of the sprockets. I find online are for #35, #40, etc... What is the #__ for bicycle chain & sprocket? The sprocket I'm looking for is for bike chain, 5/8 inch bore, with hub & preferably set screw and approx 30 teeth. Any idea where I could finding or info that I could use for my search?


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