The chain length calculation (only in German) is made for an unsupported or gliding application.
If the supply point is outside the centre, the formula for calculating the chain length is as follows:
K = π x R + (2 x T)
Lk = length of the e-chain
S = length of travel
S/2 = half length of travel
R = bend radius
ΔM = deviation from the centre point
K = add-on for bend radius
Lk = S/2 + K2
K2 = add-on (with lowered moving end)
The e-chain glides on one half of the lower run and on the other half on a glide bar, as shown in the picture above.