Ball Plunging joints are applicable as a plunging device in propshafts or sideshafts (on the differential side). The torque is transfered via balls wich are held in the inner and outer race tracks. The first concepts originated in the late 1930s. The most dominant designs are the VL type joint and the DO type joint.
The bar shaft is a solid interconnecting shaft used to connect the joint ends of a sideshaft.
Boots are sealing systems for constant velocity joints. They are used to keep the lubricant inside the joint and to prevent dirt and moisture or any other component from getting into the joint. Accordingly they have to withstand chemical, physical, mechanical and thermal damage. In the past most sealing systems were made from synthetical elastomers, however, today thermoplastic materials are increasingly used.