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NYLON 46 GIVES BETTER WEAR RESISTANCE IN TENSIONERS
01 December 2003 - DSM Engineering Plastics
| 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.
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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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About: DSM Engineering Plastics
DSM Engineering Plastics is a business group forming part of DSM's Performance Materials cluster. DSM EP is a global supplier of Stanyl PA46 and Akulon 6 and 66 polyamides, Arnitel TPE-E, Arnite PBT and PET polyesters, Xantar polycarbonate, Yparex extrudable adhesive resins, and Stamylan UH Ultra High Molecular Weight PE. These materials are used in technical components for electrical appliances, electronic equipment and cars, in barrier packaging films as well as in many mechanical and extrusion applications. The business group had annual sales of EUR 566 million in 2003. With Stanyl, it is the global market leader in high heat polyamides.Stanyl is a family of heat-resistant polyamides from DSM Engineering Plastics. Stanyl’s high crystallinity (70% versus 50% for conventional PA66) results in high heat distortion temperatures of 190C for unreinforced grades, up to 290C for reinforced. Stanyl grades are used in automotive clutch plates, charge air coolers, chain tensioners; electrical components including motor frames and end laminates, circuit breakers, controls and connectors; and home and power tool components, including heat shields and heat-resistant utensils.
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