Type A flat sprocket for #40 roller chain is a flat hubless sprocket with a stock bore. These #40 sprockets are great for welding onto shafts or machining in mounting holes or slots for attaching the sprocket to a drive. All of our type A #40 sprockets are compatible with any ANSI #40 roller chain. For larger tooth counts you can view our full line of weld on sprocket, which is also a flat hubless sprocket.
Item Number Breakdown: 40A15 - 40 = Chain Size / A = Flat Hubless Sprocket / 15 = Tooth Count