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igus® Ltd.

Caswell Road

Northampton, NN4 7PW

01604 677240
GB(EN)

Selection of the appropriate twisterchain

1. Determine series and chain width

Specify the cables to be harnessed in the chain. The layout and the largest cable diameter determine the series and chain width required. We recommend that for the inner height you allow a cable clearance of approx. 20% of the chain's inner height and width. This means that, for a cable diameter of 30 mm, for example, series 3808 should be selected.

2. Determine outer and inner radii

Determining the assembly 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 chart -> 392 mm

3. Determine bending radius R

HF = 460 mm -> H max. 410 mm -> R = = 178 mm -> R175* results in: part number 2808.087.175/500
*next smallest radius

4. Calculate necessary number of links

  • The resulting number of links should always be rounded up.
  • The mounting brackets can be mounted only to the outer links of the twisterchain. For this reason, the number of links must always be increased to the next odd number.
Formula to arrive at the number of links
Dimensioning of the twisterchain.

Legend

A = Outer limit
B = Machine
C = Upper limit
a = Acceleration
α = angle of rotation
AR = Outer radius of e-chain®
Ba = e-chain® outer width
Bi = e-chain® inner width
FZmax = Max. fill weight
H = Nominal clearance height
ha = e-chain® outer height
hi = e-chain® inner height
HF = Required clearance height incl. 50 mm free space
IR = Inner radius e-chain®
K = Supplement for bend radius
in the calculation of length n = Number of links
R = Bend radius
T = Pitch
v = Travel speed
X1 = Inner machine installation space
X2 = Outer radius incl. free space
RLK = Distance to pivot/mounting holes on the outside
Generally information for twisterchain:
In the case of machine elements that travel in a circular movement both to the left and to the light, the total angle of rotation is calculated by adding the two angles.
 

The following space is absolutely required to enable the chain to function properly:
 
IRmin. = X1 + 80 mm
 
X2 min = AR + 80 mm
 
HF = H + 50 mm

Suggestions for the layout of the twisterchain without additional components

e-chain®FZmax.FZmax.v to ARa to ARBRAR
Seriesα 180°α 360°permissible[m/s²]max.permissible
 [kg/m][kg/m][m/s]max.[mm][mm]
 
2208.1,01,00,3 - 1,02,0100300
2808.2,01,00,3 - 1,02,0150450 - 550
3808.3,01,80,3 - 1,02,0200450 - 550
4008.4,02,50,3 - 1,02,0250600 - 700
If your calculations exceed our recommendations, please get in contact with us.


The terms "igus", "Apiro", "chainflex", "CFRIP", "conprotect", "CTD", "drylin", "dry-tech", "dryspin", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-skin", "e-spool", "flizz", "ibow", "igear", "iglidur", "igubal", "igutex", "kineKIT", "manus", "motion plastics", "pikchain", "readychain", "readycable", "ReBeL", "speedigus", "triflex", "robolink", "xirodur", and "xiros" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsubishi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention on this website. The products offered by igus® are those of igus® GmbH