drive-belt--components-catalogue-aus--nz-november-2009

Tech Tip
The Technical Truth About Belt Tensioners
Round torsional spring vs. flat spring tensioners - which has fewer contamination problems?
A flat spring’s worst enemy is contamination by dirt and grime. It can cause a flat spring tensioner to “seize” and is one of the key causes of failure.
Advanced design engineering in round torsional spring tensioners virtually eliminates the chance of contamination, making it the choice of more
OEM manufacturers. Here’s why:
Round Torsional Spring Tensioner
1. Torsion spring design is not affected by contaminants because of
the spacing between the spring coils.
Flat Spring Tensioner
1. Flat spring design is subject to failure due to contamination because
dirt and grime can lodge between coils. Particles become trapped,
causing the tensioner spring to seize.
Advanced “labyrinth” sealing systems on new round torsional spring
designs eliminate the need for rubber plugs and have virtually eliminated
the possibility of contaminants penetrating a tensioner. This solid sealing
aluminum design does not break down over time.
Flat spring designs incorporate the use of rubber plugs to prevent tensioner
contamination. Rubber plugs can dry up, crack or fallout. Aftermarket flat
spring tensioners still use rubber plugs to prevent contamination.
Why Choose Gates?
Gates builds only round spr ing automatic belt tensioners. Eachwith the advanced labyrinth sealing system that deters contamination. Unlike socalled
“universal” tensioners, Gates tensioners look, fit and perform like the OE, and require no retrofitting to make them work. Gates tensioners
bolt on just like the tensioner you took off. Choosing the right tensioners is easier when you choose Gates.
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