SKF NN3017 KTN9 SP W33 Super-Precision Double Row Cylindrical Roller Bearing

SKF NN3017 KTN9/SPW33 is a double‑row, super‑precision cylindrical roller bearing in SKF’s NN family, engineered for high‑speed, high‑rigidity applications such as precision machine tools and spindles. It features a bore of 85 mm, an outer diameter of 130 mm, and a width of 34 mm, with internal clearance class C1, and is offered in a robust steel design suitable for demanding environments. The designation NN3017 KTN9/SPW33 identifies a specific NN series variant optimized for rigidity and speed, and this model is listed by SKF and distributors as a 85×130×34 mm double‑row, SP (super‑precision) cylindrical roller bearing. In practice, NN series double‑row bearings provide a favorable balance between load carrying capacity, rigidity and speed, making them well suited for precision bearings in machine tools and other high‑accuracy equipment.