Needle track roller – stud type – with cage, with or without an eccentric axle box is characterized by an integrated stud and a thick outer ring that can directly rotate on the mating tracks. Typically used when high load capacity and high shock resistance are required it can, also, support angular misalignments because of the particular geometry of the generatrix of the outer surface. It can be provided with an eccentric axle box to allow the radial adjustement. A watertight version is also available.