DID 60 standard roller chain - Big Bike Webshop

Small Conveyor Chains Technical Information
When you design various conveyor systems using DID small conveyor chains, the following basic conditions must be
satisfied.
a. Chain tension: The actual tensile strength in operation must be significantly lower than the specified strength of the chain.
b. Strength of loaded components of chain: The actual loads applied to attachments, such as rollers of base chain, top
rollers, side rollers, etc. in operation must be significantly smaller than the strength of these components.
c. Wear life of chain: Lubrication conditions to ensure the wear life of chain must be fulfilled.
d. Sag adjustment of chain: The sag of the chain must be kept optimum by tension adjusters, take-up devices, guides, etc.
e. Others: Appropriate measures are taken to prevent rail wear, machine vibration and other problems.
Small Conveyor
Chains
The following complement the above.
Calculation of Chain Tension
Technical
Information
In general, at first, tentatively determine the chain size to
be used referring to "Tentative determination of chain
size". Then, obtain "Theoretical chain tension (T)" (P213)
for the tentatively determined chain, and multiply the value
by "Speed coefficient (K)", to obtain "Substantial chain
tension (Ta)". For safety, the substantial chain tension
must be lower than the "maximum allowable tension"
stated in the table of dimensions of respective chains.
Consequently, the condition below should be satisfied.
Safety condition of chain tension
Substantial chain tension (Ta)
Theoretical chain tension (T)
Speed coefficient (K)
Substantial chain tension (Ta)
Maximum allowable tension
If this condition is not satisfied, select a larger chain by
one size and re-calculate.
Value of speed coefficient (K)
The speed coefficient (K) expresses the severity of
operation condition according to the traveling speed
of chain since the condition becomes severer as the
traveling speed of chain becomes higher.
Multiply "Theoretical chain tension (T)" by "Speed
coefficient (K)" to obtain "Substantial chain tension
(Ta)".
Speed coefficient K
Chain speed (m/min) Speed coefficient
Less than 15
1.0
1530
1.2
3050
1.4
5070
1.6
7090
2.2
90110
2.8
110120
3.2
When plastic rollers (including anti-static rollers)
are used, run the chain at the speed of 70 m/min
or less.
Tentative determination of chain size
qDetermine the mass (weight) per unit length of
components such as chain and attachment c
(kg/m or kgf/m) assuming that it is 10 % of the mass
(weight) of the conveyed object 1 (kg/m or kgf/m).
wIn reference to the calculation formulas on P213,
obtain "Theoretical chain tension (T)" (kN or kgf) and
"Speed coefficient (K)", and calculate "Substantial
chain tension (Ta)" (kN or kgf).
eIn reference to the table of dimensions of chains,
identify the minimum chain, whose "maximum
allowable tension" is higher than the "Substantial
chain tension (Ta)", and regard it as "tentatively
decided chain".
Note: When the chain speed exceeds 120 m/min, please consult us.
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