OCTIS joint type "C" belongs to the series of the cross-joints. It is a made of two hub-forks, which are bored and broached for the introduction of the spider equipped with needle-roller bearings. OCTIS cross-joints and - shafts also allow a drive precision at high speeds, 4/5000 rpm, and they have the possibility to substitute the spider-unit when worn. The advantages of "C" joints and shafts are basically given by the characteristics of the bearings, which are worked on machine-tools and heat-treated in order to get a better hardness and, moreover, they are equipped with a rubber packing assuring a protection from dirt and dampness. They can also be greased through the spiders periodically, where inside there is a canal which allows the lubricant distribution. The average lubricant frequency, every 1000 working hours, is normally an acceptable value.