Cylindrical roller bearing NNU 4152 M/W33

double-rowsteel

SKF double row cylindrical roller bearings are available in several designs with a cylindrical or tapered bore. The SKF standard assortment presented in this section includes: NNU design bearings (fig. 1) NN design bearings (fig. 2) NNUP design bearings (fig. 3) product details Designs and variants General bearing specifications Loads Temperature limits Permissible speed Design considerations Mounting Designation system Features and benefits High load carrying capacity Because of their second row of rollers, double row cylindrical roller bearings are suitable for heavy radial loads. Low friction (Roller end / flange contact area) The open flange design (fig. 4), together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capacity. Long service life The logarithmic roller profile reduces edge stresses at the roller/raceway contact (fig. 5) and sensitivity to misalignment and shaft deflection. Enhanced operational reliability The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film. Separable and interchangeable The separable components of SKF double row cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections. High speed capability The cage designs are suitable for high speeds, rapid accelerations and peak loads.