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.
As result, differentiate among three types unsupported length:
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. The
e-chain® runs smoothly without additional vibration.
3.
The FLG type installation
always generates the
longest service life and
can operated with the
max. Unsupported with straight upper run FLG
Thee-chain® isunsupportedFLG whentheupperrunstillhascamber,isstraightorhasamaximum
sag 1/2 the e-chain® link height. Using e-chain®
in critical sag should avoided solved with special solutions. 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.
More information www. Installing the e-chain® FLG always recommended.
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. most applications the e-chain® can
be used unsupported FLB without any problems. The overall travel distance can extended to
a maximum 100% from FLB
3D CAD, configurators, service life calculation and more www.
2. 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. The overall straight, unsupported travel can increased
here maximum 50% the FLG and case option maximum 100%
Support the FLB area.eu
. The unsupported application is
the most common. Unsupported with
straight upper run FLG
2.
3.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.
The maximum unsupported length depends the fill weight and the type e-chain® e-tube.
2. values for speed and
acceleration
1. Unsupported with
permitted sag FLB
3. Applications may reach critical sag after long service times. The e-chain®
or e-tube should replaced these cases. e-chain® should never be
installed with critical sag.igus. Critical sag
When the sag the e-chain® higher than allowed for FLB, critical sag. (Please consult igus®)
● Design the travel distance gliding application
Example unsupported with sag, FLB
Support the FLG area. igus® e-chains® are very well suited for high dynamics and long service life. There are restrictions concerning the maximum
speed and acceleration.igus
