NSK 6307 6307-ZZ 6307-DDU 6307-NR SS6307 ... -
NSK 6307|ZZ bearing. zz is the bearing with iron dust cover on both sides. NSK 6307|DDU bearing. DDU|with contact rubber seals on both sides. NSK rolling bearings are generally composed of rings, rolling elements and cages. According to the load bearing direction, it can be divided into radial bearings and thrust bearings. NSK SS6036 bearing. 1.