1. Technical Information andTest Results for Fenner
Precision StretchBands
ATM and Self-Service

2. Contents
Typical Physical Properties, General Manufacturing Range, and
Tolerances
4
Available Materials 5
Testing Capabilities 6
Coefficient of Friction and Electrical Conductivity 7
Fenner Precision StretchBandTension during Accelerated Life
Testing
8
Tension Decay Comparison 9
LongTermTension Decay Comparison 10
Comparison ofTension at DifferentTemperatures 11
InstalledTension Properties atVariousTemperatures 12
Comparison ofTension at Different Humidities 13
Summary of Results 14

3. 25 years’ experience in the ATM
and paper propulsion industries.
UL Approved.

4. 4
Typical Physical Properties, General Manufacturing
Range, and Tolerances
Belt sizes from 10mm to 300mm wide, and 75mm to 1500mm long.
General thickness tolerance of ± 0.15mm on press moulded belts, and ± 0.1mm
on ground/linished belts.
Installed load of nominal 1N/mm2 of belt cross section.
Width tolerance normally ± 0.5mm.
Available with impression or ground finish.
Available on a Dual Durometer construction.
Available with tracking ribs or perforations.

5. 5
All of our CSM rubber and EPDM materials are anti-static.
Material EPDM CSM Rubber
EP24 EP35 EP10 H6
Hardness (Shore A) 65 70 75 65 ±5
Tensile Strength (Mpa) 8 10 10 14 (min.)
10% Modulus (Mpa) 0.7 1.0 1.1 0.5 - 1.0
Tear Strength (N/mm) 15 10 15 5 (min.)
Specific Gravity (g/cm3) 1.12 1.18 1.16 1.22 ±0.02
Elongation at Break (%) 300 200 220 300 (min.)
Electrical Conductivity
(Ω)
106 - 108 106 - 108 106 - 108 106 - 108
RoHS Compliant ✓ ✓ ✓ ✓
UL94 HB Approved (1mm
minimum thickness)
✓ ✓ ✓ X
Available Materials

6. 6
Testing Capabilities
Fenner Precision owns a well-equipped testing laboratory
that can simulate the environment of an ATM. Our on-site
laboratory includes facilities for:
Rheology testing
Hardness testing
Tensile testing
We are also able to simulate an extended belt life cycle with
our environmentally controlled dynamic testing chamber.
This chamber has a temperature range of -400C to +700C.
The pulley setup from our long term
StretchBand testing equipment. It
simulates the convoluted path a
belt may take in a cash machine. An
eccentric pulley replicates a stack of
notes passing through.

7. 7
Coefficient of Friction and Electrical Conductivity
Results of testing a Fenner Precision StretchBand and a competitor’s belt.
Belt Typical Belt Face Coefficient of Friction
Fenner Precision 0.65mm
Seamless Elastic EPDM Belt
Impression 1.07
Plain 1.07
Competitor 0.65mm Seamless
Elastic PU Belt
Manufactured (Gloss) 0.48
Ground (Matte) 1.02
Belt Typical Belt Face Electrical Conductivity (MΩ)
Fenner Precision 0.65mm
Seamless Elastic EPDM Belt
Impression 0.28
Plain 0.29
Through 0.27
Competitor 0.65mm Seamless
Elastic PU Belt
Manufactured (Gloss) 0.48
Ground (Matte) 726
Through 1000
Electrical Conductivity
Coefficient of Friction

8. 8
Fenner Precision StretchBand Tension during
Accelerated Life Testing
InstalledTension v. RunningTime (as years)
Testing of Fenner Precision’s 1.0mm seamless elastic EPDM StretchBands.

9. 9
Tension Decay Comparison
A comparison between Fenner Precision’s seamless elastic EPDM StretchBands and
competitors’seamless elastic PU belts.
Tension Decay after 12 hours at 230C, 50%RH, No Motion

10. 10
Long Term Tension Decay Comparison
Tension Decay after 3 months (-400C to +500C)
A comparison between Fenner Precision’s seamless elastic EPDM StretchBands and a
competitors’seamless elastic PU belts.

11. 11
Comparison of Tension at Different Temperatures
InstalledTension v.Temperature (-100C to +200C)
As the temperature
varies so does the
tension on the
competitor’s belt,
whereas the Fenner
Precision StretchBand
tension remains
relatively constant.
Excessive tension
variation can lead to
slipping and tracking
issues.
A comparison between Fenner Precision’s 1.0mm seamless elastic EPDM StretchBands
and a competitor’s 1.0mm seamless elastic PU belts.

12. 12
Installed Tension Properties at Various Temperatures
InstalledTension v.Temperature (-400C to +400C)
The Fenner Precision
0.65mm StretchBand
remains stable over
a wider range of
temperatures than
the competitor’s
0.65mm belt.
A comparison between Fenner Precision’s 0.65mm seamless elastic EPDM StretchBands
and a competitor’s 0.65mm seamless elastic PU belts.
Belt tracked
off pulley

13. 13
Comparison of Tension at Different Humidities
InstalledTension v. Relative Humidity (50% to 100%)
As the humidity varies
so does the tension on
the competitor’s belt,
whereas the Fenner
Precision StretchBand
tension remains
relatively constant.
Excessive tension
variation can lead to
slipping and tracking
issues.
A comparison between Fenner Precision’s 1.0mm seamless elastic EPDM StretchBands
and a competitor’s 1.0mm seamless elastic PU belts.

14. 14
Improved tension characteristics across a wide range of temperatures and
humidities when compared to competitors’polyurethane belts.
Fenner Precision EPDM StretchBands operate between -200C and +500C. At
-100C the flexibility of the competitor’s belts was poor.
Enhanced tracking capabilities compared to competitors’polyurethane belts.
Fenner Precision StretchBands don’t require tensioners; enabling simpler, more
cost-effective design systems.
Property Fenner Precision 0.65mm
Seamless Elastic EPDM
StretchBands
Competitor 0.65mm
Seamless Elastic
Reinforced PU Belts
Installed Tension Decay = =
Working Temperature Range + -
Coefficient of Friction + -
Electrical Conductivity + -
Key: + Superior to competitor; - Inferior to competitor; = Comparable to competitor
Summary of Results

15. 15
Each Fenner Precision
StretchBand is thoroughly
checked by our dedicated
quality assurance team.

16. For more information, contact:
Fenner Precision
info@fennerprecision.com
Tel: +44 (0)1522 551010
Fax: +44 (0)1522 511252
www.fennerprecision.com
ISO 9001 2008
Made in England