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Selecting the right twisterchain®
1. determine series and chain width
Determine which cables you want to use to assemble the chain. The required series and chain width result from the assignment and the largest cable diameter. For the inner height, we recommend taking into account a cable clearance of approx. 20% of the inner height and width of the chain. This means that series 3808 should be selected for a cable diameter of 30 mm, for example.
2. determine outer and inner radius
Determine the available installation space (dimension X1 and X2)
Example: α = 220° / max. cable diameter 24 mm -> Series 2808
X2 = 580 mm -> AR = 500 mm
X1 = 310 mm -> IRmin. = 390 mm -> Selection table -> 392 mm
3. Determine bend radius R
HF = 460 mm -> H ≤ 410 mm -> R = = 178 mm -> R175* results: Part No.. 2808.087.175/500
*Smaller radius coming soon
4. calculate the required number of links
- The resulting number of links must always be rounded up!
- The connecting elements can only be fitted to the outer link of the twisterchain®. Therefore, the number of links must always be increased to the next larger odd number!
Legend
A = Outer limit
B = Machine
C = Upper limit
a = Acceleration
α = rotation angle
AR = outer radius e-chain®
Ba = e-chain®® -outer width
Bi = e-chain®® -inner width
FZmax = max. additional load
H = Nominal clearance height
ha = e-chain®® -outside height
hi = e-chain®® -inner height
HF = Required clearance height incl. 50 mm free space
IR = Inner radius e-chain®
K = Surcharge for bend radius
for length calculation n = Number of chain links
R = bend radius
T = pitch
v = Travelling speed
X1 = Inner machine installation space
X2 = outer radius incl. clearance
RLK = Distance pivot point/fixing holes outside
twisterchain® is generally valid:
For machine elements that move in a circle both to the left and to the right, the rotation angle is calculated by adding the two angles.
The following clearances are essential for the chain to function correctly:
**IRmin. = X1 + 80 mm
X2 min. = AR + 80 mm
HF = H + 50 mm**
Recommendations for designing the twisterchain® without additional components
e-chain®
FZmax.
FZmax.
v to AR
a to AR
BR
AR
Series
α 180°
α 360°
permissible
[m/s²]
max.
permissible
[kg/m]
[kg/m]
[m/s]
max.
[mm]
[mm]
1,0
1,0
0,3 - 1,0
2,0
100
300
2,0
1,0
0,3 - 1,0
2,0
150
450 - 550
3,0
1,8
0,3 - 1,0
2,0
200
450 - 550
4,0
2,5
0,3 - 1,0
2,0
250
600 - 700
If your calculations exceed our recommendations, please contact us.
Consulting
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