Joints allow uninterrupted transmission of torque while the drive shaft is flexed. Universal joints utilize two yokes which are joined with a cardan cube or cross. Constant velocity joints use steel balls which travel in steel grooves to transmit the torque. Constant velocity joints allow higher inclination angles than universal joints. The rotational speed of the shafts joined by a constant velocity joint are identical at all times, even if the joint is flexed. In contrast, the rotational speed of shafts joined by a universal joint oscillates continuously if the shaft is flexed.
Joints are decisive for the vehicle’s noise level. They impact weight and box volume of the shafts. In case of a vehicle collision, joints aid the shaft parts to telescope, hence protecting human lives. IFA has developed classes of universal and constant velocity joints which cover all performance and durability requirements. IFA joints are maintenance-free and corrosion-resilient. IFA produces joints on semi-automatic production lines to satisfy in-house demand and for sale to third parties.