BettaHaul Load HaulSafe Bearer systems have been extensively tested in real-world applications, combined with professional testing undertaken by an accredited NATA test laboratory. Please note: Every PCBU must however undertake their own evaluation to assess risks, ensuring their safety performance complies with standard as reasonably practicable.

BettaHaul Pty Ltd has invested over 10 years continuously developing rubber bearers and attachments whilst continuously engineering  better solutions.

Our Bearers are an engineering solution, proven and tested. 

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Our proprietary Rubber formulation is manufactured and tested in accordance with ASTM ISO37 and ISO8307 standards.

Rubber Bearers are manufactured using Vulcanization process cross linking long elastomer chains to increase strength and durability. Tested at 8Mpa to 12Mpa providing good durability. We chose to mould rather than extrude the rubber in order of maintaining strength that way we can use durable virgin rubber on the top 20mm of bearer surface and use recycled rubber crumb as a base.

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Testing regimes involve Static Load tests, by placement of Rubber Bearer under a compression load test platform, using a 200mm Diameter ram using a compression force of 50kN (5.1 tonne) also performing distributed load test of 150kN (15.3 tonne) the tests indicated no sign of permanent damage. Destruction tests were performed on a 1200mm long bearer  at 420kN (42.8 tonne). 

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Our Rubber IP used is formulated in two parts high friction offering the best possible COF and load bearing rubber. 

Our Rubber is engineered for environmental conditions such as resistance to Ultraviolet exposures and can also resist most industrial solvents.

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We always recommend Risk Assessments be taken upon yourself to ensure your Load carried has the best possible solution in order of minimising potential hazards.

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BettaHaul has undertaken an independent research program to determine various  COF characteristics with altering climatic conditions, conducted during a 12 month period. Testing sample was horizontally placed applying a lineal force on the same plane. An applied force of 5.8Kg mill-steel on BettaHaul rubber resulted in a mean COF of  0.8µ (see results in PDF). As standard practice we will always under evaluate results by 30% giving BettaHaul Bearers 0.6µ.  

The tests were conducted with variable weather conditions to gain a broad perspective for assessing the true COF.

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Testing within a Laboratory will validate a CoF result, however the COF measured in a laboratory will be based on  predefined parameters.

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COF (Coefficient of Friction) is the physical effect between the force and the friction amid two objects.

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An Example of COF:

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  Low COF  - <0.2µ is Ice Skating,  - Steel on Ice.  Steel is hard and ice is also hard.  Another example  Steel on Steel.

  High COF - >0.7µ is Rubber soled Shoe on a Concrete hard surface.

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Put simply, Hauling goods when using Low friction methods the objects will always have a much greater tendency to shift during transportation. 

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Hauling Steel on Steel - Very low COF < 0.2µ, a horizontal static force on a flat surface of say 201 Kg will move a load 1000 Kg having a COF ~ 0.2µ

Hauling Steel on Conveyor belt. Very low COF < 0.25µ, a horizontal static force on a flat surface of say 251 Kg will move a load 1000 Kg having a COF  0.2µ - 0.25µ. The conveyor belt collected particles which further reduced COF.

Hauling Steel on used Timber- Medium COF 0.6µ - 0.4µ, a horizontal static force on a flat surface of say 401 Kg will move a load 1000 Kg having a COF  0.4µ. Note steel on timber started at 0.6 then lost COF down to 0.4 after 6 months.

Hauling Steel on BettaHaul Rubber High COF 0.8µ  require greater than 801 Kg static force to push a load of 1000 Kg, Based on design characteristics of BettaHaul bearers, the greater the weight proved a higher COF.

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An object such as engineered rubber can be engineered to  have a coefficient of friction much greater than 0.8µ.

Based on a large number of environmental conditions BettaHaul values a  rating of 0.8µ.

 

TAKE NOTE!

What is often overlooked:  Timbers quickly absorb moisture such as processing Oils and water  deteriorating the COF properties of  the Timber bearer.  Over a short period of time the friction properties diminish to a very low yet slippery COF, also structural properties diminish.

In addition sliding or dragging a load on timber bearers create a smooth glaze on the timbers surface, in time the COF is further reduced.

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Tie-down Forces​

Note that Tie-Down forces assist with frictional force, adding to the resistance for an object to move. By example Steel on Steel requires a high number of Tie-Down Restraints than that when using Steel on Rubber.

 

With making a comparison to Steel on Rubber based upon COF calculations.  

NTC Load Restraint guide 2018 indicates the number of lashings required to restrain a load when hauling Steel on Timber requires 3 times more lashings or Steel on Steel requires up to 9 times more Reference of case study 

 

Example of this is on page 268 NTC Load Restraint Guide, a Load unblocked weighing 20000Kg using 8mm chain pre-tensioned at 1000 Kg restraint at 60 deg AE>0.85 

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• High Friction Steel on Rubber requires 4 lashings.

• Medium Friction Steel on Timber requires 12 lashings.

• Low Friction Steel on Conveyor Belt requires 16 lashings.

• Very Low Friction Steel on Steel requires 36 Lashings.

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Physical properties

​Our proprietary rubber passed stringent rebound tests ASTM D395 after a duration of 22-hours @ 70-degC compressed 1.8kN load applied, the rubber returned back to its original shape.

Rubber strength has been tested at typical 10-MPa and elongation at break 450%.

Formulated to include: ANT-SLIP properties, UV INHIBITORS and DURABILITY.

 

Design

Trapezoidal design to minimise rolling affect. This means, similar to a triangle, the base is wider than the top. A triangular load support offers the optimum stability when carrying a load. For example under sudden braking conditions the BettaHaul design has been developed so roll affect is substantially reduced.

Tread pattern on top of our Bearers creates better grip in wet conditions. The innovative design forces moisture out through the channels and creates a vacuum between the bearer and hauled goods. 

Any bearers / bolsters used to support a load on a moving truck tray must be either bevelled at the top or the base flared out.  

​We have also minimised rubber marking affects by our controlled manufacturing process and selection of quality materials.

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Clamps (Stabilising brackets)

If dunnage is placed directly on the deck, bolt it to the deck or fit it with special stabilising brackets. Page 192 Road restraint guide 2018.

​Quick release clamps (QC) are physically tested to retain bearer on trailer without dislogement. When using rubber bearer in combination with Quick clamp, tested on a cheque plate truck trailer travelling speed at 30km/hr then coming to a sudden stop the bearers only moved 15mm forward. Tested was HS93 Bearers.

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Fixed Clamps (FC), no movement was detected when tested under the same condition.

As reasonably practicable our tests met performance standards, however each PCBU must undertake their own assessments.