Common terms for synchronous belt drive
1. A circular slow band with equal transverse teeth in a longitudinal section
2. Pitch P B, the linear distance of the symmetrical center line of two adjacent teeth on the longitudinal section of the belt under the specified tension
3. A line, when the strip is bent vertically to its bottom, any perimeter in the belt that keeps the original length unchanged, its length is called the length of the section (LP), and LP is the nominal length
4. A imaginary cylindrical surface coaxial with a pulley on which the pitch of the pulley is equal to the pitch of the belt
5. The intersection of the cylindrical surface of the base section and the vertical plane of the circumference of the belt wheel
6. Diameter of pitch d-pitch circle