Frequently Asked Questions

The Chain Doctor

2. How can I determine the pitch of my silent chain?
Throughout the world, chain pitch is normally expressed in inches. The most common pitches are .375”, .500”, .750”, 1.000”, 1.500”, and 2.000”. The most reliable method for determining chain pitch is to examine three consecutive pin heads and to measure the distance (in inches) between the center of the first and the center of the third head. Divide this measurement by two and you will have the pitch. If the number obtained is different from the common pitches listed above, you may have a special silent chain. Consult Ramsey for more information on determining your chain pitch.