Under the tension state of 1% of the minimum breaking load of the chain, after eliminating the gap between the roller and the sleeve, the measured distance between the generatrices on the same side of two adjacent rollers is expressed in P (mm). The pitch is the basic parameter of the chain and also an important parameter of the chain drive. In practice, the chain pitch is usually represented by the center-to-center distance between two adjacent pin shafts.
effect:
The pitch is the most important parameter of the chain. When the pitch increases, the size of each structure in the chain also increases correspondingly, and the power that can be transmitted also increases accordingly. The larger the pitch, the stronger the load-carrying capacity, but the lower the transmission stability, the greater the dynamic load caused, so the design should try to use small-pitch single-row chains, and small-pitch multi-row chains can be used for high-speed and heavy loads .
Influence:
The wear of the chain will increase the pitch and cause tooth skipping or chain detachment. This phenomenon can easily be caused by open transmission or poor lubrication. Due to the structural characteristics of the chain, the standard only uses the chain length to detect the geometric accuracy of the chain; but for the meshing principle of the chain drive, the pitch accuracy of the chain is very important; too large or too small accuracy will make the meshing relationship worse, appear Tooth climbing or skipping phenomenon. Therefore, a certain accuracy of the chain should be ensured to ensure the normal operation of the chain drive.
Post time: Sep-01-2023