What does the term 'pitch' refer to when discussing chains?

The term 'pitch' in the context of chains specifically refers to the distance between the centers of two consecutive link pins. This measurement is crucial for ensuring compatibility between the chain and the sprockets with which it interacts. It dictates how the chain will correctly mesh with the sprocket teeth, affecting both performance and efficiency in power transmission applications.

Understanding 'pitch' is essential for anyone working with chains, as an incorrect pitch can lead to improper fit, excessive wear, or even failure of the chain system. While other options mention various aspects such as width, length, and thickness, they do not accurately describe the specific definition of 'pitch' as it pertains to chain mechanics.