A Constant Velocity Joint (CVJ) is a universal joint used especially in front-wheel drive cars that allows power to be transmitted from a transaxle to an axle or from an axle to a wheel, even at sharp angles.
Now, Advanced Elastomer Systems has introduced a new grade of Santoprene Thermoplastic Vulcanisate (TPV) that it claims is the first material designed specifically for use in CVJ boot applications.
According to AES, Santoprene TPV grade 7028 exhibits toughness at low temperatures, abrasion and grease resistance, and reduces part weight by between 20-40%. The material can also be easily processed using conventional blow moulding techniques or injection blow moulding.
The blow moulded boot, which protects part of the power transmission system, contains the grease which lubricates the CVJ and protects it from dust, rocks, mud and water. AES claims that a CVJ boot made from the new material will generate less squeak noise than those using co-polyester or thermoset rubbers.
Santoprene TPV grade 7028 is currently being commercialised with a major supplier of drive transmission systems for a 4-wheel drive vehicle in Europe.
Advanced Elastomer Systems
Tel: +32 2 706 3448
Fax: +32 3 706 3473