January 7, 2021

If you layout numerous conveyor methods employing small conveyor chains, the following basic problems needs to be satisfied.
a. Chain stress: The real tensile power in operation must be significantly reduce than the specified strength in the chain.
b. Strength of loaded elements of chain: The real loads utilized to attachments, this kind of as rollers of base chain, best rollers, side rollers, and so on. in operation have to be significantly smaller sized than the power of these components.
c. Wear existence of chain: Lubrication ailments to be sure the wear life of chain must be fulfilled.
d. Sag adjustment of chain: The sag of the chain should be stored optimum by stress adjusters, take-up products, guides, and so on.
e. Others: Acceptable measures are taken to prevent rail wear, machine vibration as well as other problems.
The next complement the above.

Calculation of Chain Stress
On the whole, at the outset, tentatively identify the chain dimension to get utilized referring to “Tentative determination of chain size”. Then, acquire “Theoretical chain stress (T)” (P213) for the tentatively determined chain, and multiply the worth by “Speed coefficient (K)”, to obtain “Substantial chain stress (Ta)”. For safety, the significant chain tension have to be decrease compared to the “maximum allowable tension” stated in the table of dimensions of respective chains. Consequently, the affliction below need to be satisfied.
Safety condition of chain tension
Significant chain stress (Ta) =Theoretical chain tension (T) ×Speed coefficient (K)
Substantial chain tension (Ta) <Maximum allowable stress
If this issue isn’t satisfied, decide on a bigger chain by 1 dimension and re-calculate.
Tentative determination of chain size
qDetermine the mass (fat) per unit length of parts this kind of as chain and attachment ωc (kg/m or kgf/m) assuming that it can be ten percent with the mass (fat) from the conveyed object ω1 (kg/m or kgf/m).
wIn reference on the calculation formulas on, get “Theoretical chain tension (T)” (kN or kgf) and “Speed coefficient (K)”, and determine “Substantial chain stress (Ta)” (kN or kgf).
eIn reference on the table of dimensions of chains,identify the minimal chain, whose “maximum allowable tension” is greater than the “Substantial chain stress (Ta)”, and regard it as “tentatively made the decision chain”.
Value of velocity coefficient (K)
The velocity coefficient (K) expresses the severity of operation condition according to your traveling velocity of chain because the issue becomes severer because the traveling pace of chain becomes greater.
Multiply “Theoretical chain tension (T)” by “Speed coefficient (K)” to get “Substantial chain stress (Ta)”.