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The unsupported length has three distinct stages:
The values in the load diagram are important so that you can find a suitable energy chain for your filling weight and travel distance and determine the maximum load for the selected energy chain.
The black line in the load diagram indicates the area of the unsupported lengthFLG in which the energy chain has no slack. If the travel distance or the cable weight increases, the energy chain begins to sagFLB (light grey curve).
Y Axis | X Axis | S |
---|---|---|
Fill weight [kg/m] | Unsupported length [m] | Travel [m] |
1.5 | 2.0 | 4.0 |
Preferred series for unsupported applications
If your application (fill weight, travel) falls outside the unsupported length range of the desired energy chain, you have the following options:
Supports in the unsupported area unsupported with straight upper run and unsupported with permitted sag
In unsupported applications, the acceleration (a) is the critical factor rather than the travelling speed (v). High accelerations can cause the energy chain to vibrate and impair the service life. This is particularly the case if the energy chain already has a sag greater than FLG . Maximum values for speed (v), acceleration (a) and service life can only be achieved with energy chains that are designed unsupported straight FLG. In this case, however, igus® e-chain systems can withstand very high loads. A peak value of 784 m/s2 acceleration has been achieved so far in continuous use.
FLG | FLB | ||
---|---|---|---|
v max. | [m/s] | 20 | 3 |
v peak | [m/s] | 50 | - |
a max. | [m/s2] | 200 | 6 |
a peak | [m/s2] | 784 | - |
Preferred series for maximum speed and acceleration
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