usflex brochure english 01

8/18/2019 UsFlex Brochure English 01

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U F 1 0 0 8 E

24/7 HELPLINE+31 (0) 512 585 555

DUNLOP UsFlex ®

T H E W O R L D S T A N D A R D I N

Q U A L I T Y A N D R E L I A B I L I T Y

italy

Telephone: +39 (0) 340 3008381 • Fax +39 (0 ) 39 990 72 34

united kingdom

Telephone: +44 (0) 7951 070800 • Fax: +44 ( 0) 1253 766420

www.dunlopconveyorbelting.com

holland (head office)

Telephone: +31(0) 512 585 555 • Fax: +31(0) 512 524 599

Dunlop Conveyor Belting • Oliemolenstraat 2 • PO Box 14

9200 AA Drachten • The Netherlands

france

Telephone: +33 (0) 13055 3903 • Fax: +33 (0) 13054 0238

Dunlop Conveyor Belting • 122 Rue des Cerisiers • ZI Sainte Appoline

78370 Plaisir • France.

spain

Telephone: +34 (0) 93 805 54 46 • Fax: +34(0) 93 805 42 69

Dunlop Conveyor Belting • C/ Galicia • 7 1ª planta

08700 • Igualada (Barcelona) • Spain.

russia

Telephone: +7 495 223 6718 • Fax: +7 495 223 6719

Dunlop Conveyor Belting • ul.Bolshaya Pochtovaya 26B • office 405

105082 Moscow • Russia.

belgium

Telephone: +32 (0) 477 698295 • Fax +32 (0) 56 55 8385

germany

Telephone: +49 (0) 172 9729302 • Fax +49 (0) 2821 973 419

All data and recommendations in this brochure have been supplied to the best of our knowledge, as accurately as possible and updated to reflect the most recent technologicaldevelopments. Some products may have been rendered obsolete in the light of more recent technological developments. We cannot accept any responsibility for recommendationsbased solely on this brochure.



Dunlop UsFlex® is the world standard in heavy-duty

industrial conveyor belting. Its innovative, straight-warp car-

cass construction surpasses traditional multiply belts in virtu-

ally every respect, creating a belt that has outstanding opera-

tional performance over a long life span. A single UsFlex

ply more than matches the strength of several traditional

multiply layers.

The UsFlex construction consists of extra-heavy strands of

polyester running lengthwise, with nylon running crosswise.

The strands are completely straight in both directions and are

therefore not intertwined unlike traditional woven carcasses.

This results in maximum protection of the warp through the

weft, with minimal stretch, both lengthwise and crosswise.

As there are no multiple plies, the result is a lightweight belt

with maximum tensile strength.

DUNLOP USFLEX® CONVEYOR BELTS

UNRIVALLED IMPACT, RIP AND TE AR RESISTANCE

superior impact resistance

When compared to conventional multiply belts with a similar

tensile strength, UsFlex stands out with its superior impact

resistance. The maximum impact energy of a single ply UsFlex

type 630/1 is comparable to that of a 4-ply EP belt type 1600/4.

superior rip resistanceUsFlex has a rip resistance that is more than four times

greater than conventional multiply belts that have a

similar tensile strength. The rip resistance is not only superior

in relation to the multiply EP belts, but also when compared

to Solid Woven.

superior tear resistance

The tear resistance of UsFlex also leaves conventional

multiply belts with a comparable tensile strength far behind.

The tear resistance is measured according to the international

ISO 505 standard.

some of the key features of usflex include:

• UNRIVALLED IMPACT, RIP AND TEAR RESISTANCE

• HIGH STRENGTH

• EXCELLENT LOAD SUPPORT

• OUTSTANDING TROUGHABILITY

• LIGHTWEIGHT

Ultra-strong straight-warp construction

warp

binder

weft



LOWER COST PER TON.. .

AND THEREFORE MORE COST-EFFECTIVE FOR NUMEROUS APPLICATIONS.

Because of its outstanding operating performance and lifespan. UsFlex is an extremely cost-effective solution. A lighter

belt type can be used in many applications due to its excellent

operational characteristics and finger splice efficiency. The

combination of these factors has been proven to result in

exceptionally low operating costs per ton.

value for money – guaranteed

UsFlex has been a proven success for many years throughout

the world. For example, a large stone quarry had been using

traditional conveyor belts for the crusher area, which is the

most demanding of applications. The average life span of these

belts had been 4 months. As a consequence the belts were

replaced with a heavier type of multiply EP belt resulting in a

marked reduction in operational costs but with a life span of

less than 12 months. After a thorough inspection by Dunlop’s

Application Engineers, UsFlex was recommended and

installed with amazing results. After 3 years, the UsFlex belt

was still successfully operating, resulting in a reduction in cost

per ton of more than 80%.

usflex with finger splice – producing exceptio-

nal operating performance and durability

In conventional multiply belts, the strength of the belt is often

determined by the strength of the splice. UsFlex puts an end

to this traditional weak spot. Instead of using the traditional

hot or cold vulcanised step splice, the finger splice method can

be used with the most spectacular results. The Dunlop finger

splice has an efficiency factor of more than 90%. This is largelydue to the actual splice materials, which have been specifically

developed for UsFlex. By comparison, a step splice has an

efficiency of 66% for a 3-ply belt type. Making a good finger

splice is actually quite easy to learn but it does require

technical training. At Dunlop we are more than happy to

share our knowledge and experience with our customers.

Although UsFlex with finger splice is supremely reliable, the

conventional ‘step’ and ‘mechanical’ splice joints can also be

used. Please ask our Application Engineering department for

the best splicing joint for your application.

usflex – the best possible guarantee for reliability in a wide variety

of industries including:• QUARRIES

• MINING

• CEMENT

• WOOD, PAPER & PULP

• RECYCLING

It is for very good reason that we call Dunlop UsFlex “the world sta ndard in industrial conveyor belts”. With its

robust construction, it is the ideal conveyor belt for particularly heavy applications. The low cost per ton also makes

UsFlex an especially cost-effective alternative for numerous applications in a wide range of industries.

* Diameter for belt loads from 60% up to 100%. For lower loads a smaller diameter can also be suitable.** The load support of a belt is a factor of the belt width, belt strength and bulk material density. The table indicates the limits for correct load

support based on three idlers of the same length set at 30°.

UF 400/1 2 .4 2.6 315 250 200 4 + 2.5 650 1600 1400 1200 1000

UF 500/1 3.3 3.7 400 315 250 6 + 3 800 2000 1800 1600 1400

UF 630/1 3.4 3.9 500 400 315 6 + 3 800 2200 2000 1800 1600

UF 800/1 4.0 4.5 630 500 400 6 + 3 800 2200 2200 2000 1800

UF 1000/2 6.5 7.2 800 630 500 8 + 3 1000 2200 2200 2200 2200

UF 1250/2 6.8 7.7 800 630 500 8 + 3 1000 2200 2200 2200 2200

UF 1600/2 10.3 8.7 1000 800 630 8 + 3 12 00 2200 2200 2200 2200

Belt

type(N/mm)

Carcass

thickness(mm)

Carcass

weight(kg/m2)

*Pulley diameters Min

coverthickness

**Min

width(mm)A (mm) B (mm) C (mm) <0.75 0.75-1.5 1.5-2.5 2.5-3.2

the usflex programme

Dunlop supplies single Usflex I and double UsFlex II carcasses with a wide range of top quality covers.

**Max. belt width (mm) for satisfactory load

support material density of t/m3:



carcass thickness and drum diameters

The carcass thickness of both UsFlex I & II is similar or smaller

than those of comparable multiply EP conveyor belts from

Dunlop. For example, the UsFlex 400/1 carcass has a thickness

of 2.4 mm, compared to 3.0 mm for the EP 400/3. As a result,

the required drum diameter may be smaller in some cases.

For more detailed information please also refer to the datatable shown in this brochure.

cover qualities

UsFlex is available in the RS (extra wear resistant) cover

quality. Other qualities, such as oil, fire and heat resistant

covers are available upon request.

Belt selection - The correct choice of belt type and cover

quality is dependent on several different factors. To enable the

correct belt type to be chosen, it is very important to provide

as much information as possible. The final choice from the

available options for each application will depend on the actual

working conditions, which may differ quite significantly from

location to location.

unrivalled technical support and guidance

When you buy from Dunlop you get more than just quality

conveyor belts because we have one of the largest, most

experienced and highly trained teams of conveyor belt

specialists and application engineers in the industry.

Dunlop provides an unrivalled level of customer service,visiting our customers on-site, providing advice, guidance

and practical support including:

• SITE VISITS AND SURVEYS

• BELT CALCULATION SERVICE

• TECHNICAL TRAINING (ON-SITE AND DUNLOP BASED)

• SPLICE TRAINING• TROUBLE SHOOTING AND PROBLEM SOLVING

• IN-HOUSE RESEARCH, TESTING AND DEVELOPMENT

• AFTER-SALES SUPPORT

Our 24-hour Helpline means that we are never more than a

phone call away when our customers need our help or advice.

This service is extremely well supported by our extensive

network of highly reputable Dunlop Authorised Distributors,

Vulcanisers and Approved Agents.

we are here to help!

If you have any concerns or questions, please call our

Application Engineering Department on +31 (0) 512 585 555.

available tensile strengthsUsFlex I : 400 - 800 N/mm

UsFlex II : 1000 - 1600 N/mm

Top cover

Carcass

Bottom cover

Top cover

Carcass

Bottom cover

Skim

UsFlex I UsFlex II

usflex brochure english 01

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