e-chain® should never be
installed with critical sag. (Please consult igus®)
● Design the travel distance gliding application
Example unsupported with sag, FLB
Support the FLG area. The unsupported application is
the most common. This option means restrictions for acceleration,
speed and noise consequence three fundamental examples are detailed below -
please consult igus® you are considering this possibility will gladly provide you with a
detailed proposal
● Use multiband e-chain® nest two igus® e-chains® inside one another.igus.
3. Unsupported with straight upper run FLG
Thee-chain® isunsupportedFLG whentheupperrunstillhascamber,isstraightorhasamaximum
sag 1/2 the e-chain® link height. There are restrictions concerning the maximum
speed and acceleration.
The maximum unsupported length depends the fill weight and the type e-chain® e-tube. The overall travel distance can extended to
a maximum 100% from FLB
3D CAD, configurators, service life calculation and more www. Critical sag
When the sag the e-chain® higher than allowed for FLB, critical sag. igus® e-chains® are very well suited for high dynamics and long service life. Applications may reach critical sag after long service times.
More information www. Unsupported with
straight upper run FLG
2.
The FLG type installation
always generates the
longest service life and
can operated with the
max. Using e-chain®
in critical sag should avoided solved with special solutions.
They are essential for:
● Findingasuitablee-chain®
for your fill weight and
travel distance
● Identifying the maximum
load for the selected
e-chain®
What the unsupported length insufficient?
If your application, fill weight and travel fall outside the unsupported length parameters the
desired e-chain®, you have the following options:
● Select stronger igus® e-chain®
● Support the e-chain® the unsupported area. The overall straight, unsupported travel can increased
here maximum 50% the FLG and case option maximum 100%
Support the FLB area.eu
Unsupported Short travels
Example for unsupported straight FLG
Unsupported Short travels
For every igus® e-chain®
or e-tube, you will find the
valuesforFLG andFLB intwo
locations: the following
pages this chapter an
overview and within every
individual series’ chapter. values for speed and
acceleration
1.eu
. Unsupported with
permitted sag FLB
3. The
e-chain® runs smoothly without additional vibration.
3.
2. The e-chain®
or e-tube should replaced these cases. The distance between moving end and the beginning the
radius curve the e-chain® called the unsupported length.117
116
C
2
x
R
1/4 S
2
x
R
1/4 S
1/6 2/6 S
A B
R R
S
H
F
H
FLG FLB
S
H
H
F
S/2 S/2
R
R
1. Critical sag
Unsupported
If the upper run the e-chain® operates without touching the lower run over the entire travel, is
called unsupported application. Installing the e-chain® FLG always recommended.igus.
2. most applications the e-chain® can
be used unsupported FLB without any problems. Unsupported with permitted sag FLG
The e-chain® unsupported FLB when the sag more than 1/2 e-chain® link height and less
than the smallest available radius this e-chain® series.
As result, differentiate among three types unsupported length:
1
