GKN sideshaft system to debut in all-new BMW 7 series

BMW is set to launch GKN Driveline’s new lightweight VL3 constant velocity joint (CV Joint) system, which enables rear-wheel drive platforms to save more than 4kg of weight, on the German carmaker’s all-new 7 Series.

GKN’s new VL3 CV joint increases torque capacity by up to 27% with no increase in packaging size. Available in four sizes, automakers can choose to maintain the torque capacity by reducing the package size by approximately 10%.

Karl Berger, GKN Driveline senior director for Product Technology of Constant Velocity Joints, said, “GKN already established the benchmark for rear CV Joints with our predecessor technology, but the VL3 sets the new level. We have developed a CVJ that is lighter, more efficient, stronger and delivers more torque in smaller packaging. The VL3 joint helps automakers achieve a refined, luxury driving experience. We are delighted that it is debuting on the BMW 7 Series.”  

With a plunging distance of 18mm, the VL3 uses a Monobloc Tubular Shaft and Face Spline connection to the wheel hub to achieve significant packaging and weight advantages as well as noise, vibration and harshness (NVH) behaviour benefits.

The VL3 builds on the company’s technology by introducing the same on a rear sideshaft. The VL3 joint uses a new and innovative track geometry with four pairs of opposed ball tracks instead of three, which enables it to transmit more torque to wheels within the same packaging space. The joint is further enhanced through the use of a diaphragm boot sealing system, instead of a standard boot and cap, which helps reduce axial packaging, grease volume and weight.