For more information on a single groove 1C200SF sheave
08B21H sprockets with a stock bore comes with the standard 12 millimeter inside diameter hole with no key-way or set screws and can be easily machine bored to custom sizes
Additionally this bushing features a 30 millimeter bore with a standard keyway
and precision 60 tooth sprocket that is manufactured to accept a J bushing
1615 Taper Lock Bushing X 38mm Bore Metric Roller Chain Sprockets For more information on aThis 1615 taper lock bushing is a high quality, durable, and dependable product that has been precisely manufactured to out last and out perform the competition. 1615 taper lock bushings are used in a wide range of applications including; belt pulleys, sprockets, drum pulleys, drive pulleys, tail pulleys, sheaves, and gears, which are items that we also offer! Additionally this bushing features a 38 millimeter bore with a standard keyway, for more