Mark IV Automotive, a division of Dayco Products LLC, one of the world’s leading producers of complete power transmission systems, switched from a lubricated nylon to Stanyl® polyamide 46 for better wear resistance in their tensioners.
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 aluminum 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.
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 aluminum 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.
Mark IV Automotive, a division of Dayco Products LLC
MARK IV Automotive has its core business in the automotive industry. The OEM/OES area is organized into two divisions: Engine (Power Transmission, Air Intake / Engine Cooling) and Platform (Fluid Handling and Fuel Systems). The Company is one of the worlds leading producers of complete power transmission systems. Engines fitted with these systems are guaranteed top performance in terms of economy, in terms of minimizing power losses and in terms of reducing vibrations. Multiple plants in North America, Europe, South America and Asia, all sharing the same systems engineering capabilities and know-how, and supported by four technical centers dedicated to Power Transmission, enable MARK IV Automotive to serve OEM customers around the world.
