OCTIS is a Company producing universal hub joints and hub cardan-shafts with pins, with needle-roller bearings and with cross. Every executions can to made in steel, stainless steel and/or on request. The hub joints with pins or with needle-roller bearings, can to be considered a derivative from the standard DIN 808 except for some structural and functional modifications, which were introduced in the manufacture of its products by OCTIS. The main differences, with OCTIS joints and standard DIN 808 are represented by the application of high-stregth steels for the highest strenght and torsional hardness with a lower outside diameter.
The pins and the sphere are made in high-strength steel and are treated on the surface for long life. The pins till size 60.40 are assembled directly in the fork wings through a special process and they move in the spherical articulation which represents the central part of the joint. It allows a bigger area of articulation compared to that available in the fork wings. Therefore, we have a better transmission of the force and a reduced wear of the pins and of their rotation seats. For the bigger sizes, the pins move in the hardened bushings, inserted in the wings and blocked in the central articulation.
The execution with needle-roller bearings provides the introduction of a pair needle-roller bearings, lubricated for life, where the pins rotate. The pins are made in high-strength steel and treated on the surface to resist to wears and they are closed in the central joint part. Between the fork wings and the flat surfaces of the sphere there is a antifriction ring, which absorbs lateral forces.
It is made of two hub-forks, which are bored and broached for the introduction of the cross with needle-roller bearings. OCTIS cross joints and cross cardan-shafts also allow a precision at high speeds, 4/5000 rpm, and they have the possibility to substitute the cross unit when worn. The main advantages are the characteristics of the bearings, worked on machine-tools and heat-treated in order to get a better hardness, are equipped with a rubber packing against wet and dust. Further, it is possible to insert the grease periodically through an internal duct of the cross that allows the distribution of the lubricant. The average frequency of lubrication, approximately 1000 hours of operation, is normally an acceptable value.
OCTIS with his long experience can to provide universal joints and cardan-shafts by customized design.