twisterchain general information

Instructions for designing the twisterchain® new using an example:

If you would like us to do the project planning for you, please use the igus®® system project planning. If you would like to define the e-chain® and support trough yourself, please work through the following points and enter the results in the calculation aid at the end of the chapter.

1. select series and determine chain width - customer data for example:

• Available installation space outer radius = 592 mm
• Available installation space inner radius = 311 mm
• α rotation angle = 220°
• clearance height = 466 mm
• max. Ø cable customer = 22 mm (7.5xd)

Estimate the dimensions of the chain based on the interior separation with filling and select the series or check the max. Check the max. cable diameter and select the series based on the next largest permissible Ø. (We recommend taking into account a cable clearance of approx. 20% of the inner height and width of the chain for the inner height).

max. Ø cable diameter twisterchain®: TC32 = 28 mm | TC42 = 38 mm | TC56 = 50 mm Example: max. Ø cable diameter customer 22 mm = TC32 series (next larger)

2. select outer radius AR
Select the next smaller X2 of the chain from the available installation space of the outer radius. Subtract 80 mm from dimension X2 to obtain the required outer radius AR. For selection of chain outer radii, see table dimension X2 of the corresponding series.

Formula AR = X2 - 80 mm

Example:
1. available installation space outer radius 592 mm => 580 mm (X2)
2nd X2 580 mm - 80 mm => AR 500 mm (next smaller selected)

3. select inner radius IR
Add 25 mm to the available installation space of the inner radius and then select the largest X1 of the chain. The selected value results in the max. width Bi. selection from the table of the corresponding series.

Formula: IRmin. = X1 + 25 mm

Example:
Available installation space inner radius 311 mm + 25 mm = 336 mm => X1 350 mm = Bi 11 (108 mm)

4. Determine bend radius R
In principle, the chain bend radius R is determined by the smallest bend radius of the cable. Selection from the table of the corresponding series.

Example:
1. Ø 22 mm (7.5xd) => 22 mm x 7.5 = 165 mm Cable bend radius min.
2. 165 =>R 175 mm (next larger selected) results => Part No.. TC32.11.175/500

5. determine the required installation heightH
A surcharge of 170 mm is added to twice the value of the selected chain end radius R.

Example:
R 175 mm x 2 + 170 mm = H 520 mm

Recommendations for designing the twisterchain new without additional components