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News

Nylon 46 gives better wear resistance in tensioners

DSM Engineering Plastics (Sittard) : 01 December, 2003  (Application Story)
Mark IV Automotive, a division of Dayco Products LLC, one of the world
On a vehicle, the tensioner provides tension to the Front End Accessory Drive belt (FEAD), which in turn drives the alternator, power steering pump, water pump and other “accessories” on the car. The tensioner has two aluminium halves with a spring in tension between the two halves. One half is mounted and the other half has a pulley that is in contact with the belt, which moves to keep tension on the belt.

Now, Mark IV Automotive, a division of Dayco Products LLC, one of the world’s leading producers of complete power transmission systems, has switched from a lubricated nylon to Stanyl polyamide 46 for better wear resistance in its tensioners.

Stanyl’s toughness and natural lubricity allows the tensioner to hold up for the life of the car. When the engine is running, the arm oscillates and the Stanyl components sandwiched between the aluminium housings provide the necessary wear resistance. If there is too much wear, the arm could become misaligned, causing belt wear and/or noise.

In addition, Stanyl provides excellent chemical and heat resistance for the tensioner in an area where it is exposed to dirt, rain, under-the-hood grease and oil, and engine heat.


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