Finished bore sprockets provide increased prevention of shaft slippage more than minimum simple bore sprockets. Finished bores enable the roller chain sprocket to move Auto Chain larger loads with an increase of accuracy.
Toronto Gear Functions produces ready-to-ship finished bore sprockets that are produced with precision and are fast and easy to install. Our catalogue includes a variety of finished bore sprockets that may match many precise overall performance requirements.
Toronto Gear Functions stocks steel completed bore roller chain sprockets for #25 (0.250” pitch) roller chain. We stock these metal sprockets in tooth counts ranging from 9 to 72. Our completed bore sprockets with a 0.500” bore or smaller are supplied with two set screws. All of our completed bore sprockets with a 0.625” bore or greater have a standard keyway and two established screws. The keyway is centered on the tooth and the arranged screws can be found over the main element at 90 degrees.
Steel finished bore #25 roller chain sprocket component numbers could be determined as follows:
25BF + Tooth Count + “x” + bore size.
An example would be 25BF72x1-3/8. This is for a #25 roller chain. It includes a “B” design sprocket which implies that it includes a hub. It includes a finished bore of 1 1.375” and it offers 72 teeth.