siegling extremultus
flat belts

Heavy-duty drives

Siegling – total belting solutions

Superb power transmission
for heavy-duty applications
Siegling Extremultus belts excel
at transmitting vast amounts ofpower proficiently. They are
extremely efficient and often a welcome alternative to high-loss gearboxes.

Polyamide line with a tension member
made of highly oriented polyamide sheet➊➋

Siegling Extremultus power transmission belts are durable, hard-wearing,elastic, as well as shock- and vibration-absorbent. They are used at belt
speeds of up to 100 m/s.
Compared with other drive components like V-belts, they offer especiallyhigh efficiency of over 98% and exceptional speed stability.

➌Truly endless aramid line with a tension
member made of truly endless aramid cord➊

Typical applications are:➋– turbines, generators, compressors;➌– engine test rigs;– flakers and chippers;– gang saws for wood and stone;

Truly endless polyester line with a tension
member made of truly endless polyester cord

– forming presses.
➊➋➌➊ Top face | ➋ Tension member | ➌ Underside

You can find product details in the Siegling
Extremultus compendium (ref. no. 333)

2The properties

The advantages

thin/flexible		high efficiency > 98%,
small reversing drum diameter

constant friction coefficient,high abrasion resistance		

speed kept constant,long service life

high elastic modulus		

short take-up ranges,
low creep

laterally stiffvery strong edges

good damping characteristics		

kind to bearings,
smooth, vibration-free tracking

Article number

Total thickness approx.
[mm]dmin approx. [mm]*Nominal effective pullapprox.
[N/mm belt width]**Specific shaft load
[N/mm belt width]***Elongation at fitting [%]Weight approx. [kg/m2]

Polyamide line
LT 20P
LT 28P
LT 40PLT 54P
LT 65P
LT 80P
GT 20P black
GT 28P black
GT 40P black
GT 54P black
GT 80P black

800010800011
800012800013998059800014850047850048850049850050850051

3.4
3.7
4.4
5.5
5.8
7.2
2.5
3
3.65
4.5
690
125
200
300
400
400
60
120
200
300
400

20
28
40
54
65
80
20
28
40
54
80

20
28
40
54
65
80
20
2840
54
80

1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3
1.5 – 3

3.4
3.7
4.3
5.5
5.7
7.1
2.65
3.3
4
4.9
6.4

Polyester line
LT 20ELT 28E
LT 40EGT 20E black
GT 28E black
GT 40E black

810003810004810005810026810029810032

2.3
2.9
3.2
1.9
2.1
2.4

80
130
180
70
120160223640
2236
40

40
56
80
4056
80

0.5 – 1.5
0.5 – 1.5
0.5 – 1.5
0.5 – 1.5
0.5 – 1.5
0.5 – 1.5

2.5
3.2
3.3
1.9
2.2
2.5Aramid line
LT 54ALT 80AGT 54A black
GT 80A black

810081
8100808100538100822.7
2.8
1.8
1.930020015015055
825482280250260
250

0.3 – 10.3 – 1
0.3 – 10.3 – 1

2.7
2.8
1.9
2

Extract from theproduct range

Please note: The values stated are nominal and can fluctuate in a belt whose width is a result of production processes.
Our products are constantly adapted to market requirements. Consequently, changes in technical parameters can occasionally occur.
Therefore, please see the current product data sheets for specific information on designs and calculations.

LegendFor technical reasons, belts with a truly endlesstension member are made with the following
dimensions:
Width [mm]Length [mm]A =	Aramid
E = Polyester
G = Elastomer G

min. 10min. 420

max. 480
max. 13700

L = Chrome leather
P = Polyamide
T =	Blended orpolyamide fabricFlaker for tree trunks up to 1200 mm ØPower transmission 1850 kW
Belt type GT 80P

3Type code for Siegling Extremultus
The values stated were identified in standard
G T 20 P 		
ambient conditions (23 °C, 50% rel. humidity).
*	Lower t­ emperatures require larger drum
L T 20 Ediameters. For the polyamide line, this also
GT 54 A black
applies in the case of low humidity.
**	The nominal effective pull specifies theColor overall
power transmission at the nominal elongaor undersidetion at fitting and 180° arc of contact inMaterial of
N/mm belt width.
tension member***	Relaxed specific shaft load at 1 % elongation
Type numberat fitting and 180° arc of contact in N/mm
belt width.				
Coating top face
Coating underside

Kaplan tubular turbines
Turbine power 240 kW
Belt type LT 28P

Schuler CRM solid forming press
Pressing force 40000 kN
Belt type LT 54

Siegling – total belting solutions
Committed staff, quality oriented organization and­production processes ensure the constantly high standardsof our products and services. The Forbo Siegling Quality
Management System is ­certified in accordance with ISO 9001.

Forbo Siegling service – anytime, anywhere
The Forbo Siegling Group employs more than 2,500 people.
Our products are manufactured in ten production facilities
across the world. You can find companies and agencies withwarehouses and workshops in over 80 countries.
Forbo Siegling service points are located in more than
300 places worldwide.

Forbo Siegling GmbH
Lilienthalstrasse 6/8, D-30179 HannoverPhone +49 511 6704 0
www.forbo-siegling.com, siegling@forbo.com

06/20 · UDH · Reproduction of text or parts thereof only with our approval. Subject to change.

Ref. no. 192-2

In addition to product quality, environ­­mental protection is
an important corporate goal. Early on we also intro­duced anenvironmental management system, certified in accordancewith ISO 14001.