Cylindrical roller bearings, double row, super-precision. Tolerances: SP, UP, SP and UP for 1:12 tapered bore, Chamfer dimensions · Radial internal clearance:
Types NU, N, NNU, and NN are suitable as free-end bearings. Table 1 Standard Cages for Cylindrical Roller Bearings NU, NJ, NUP, NH, and NNU & Fw.
A cylindrical roller bearing used for the main spindle of a machine tool can ② Single-row cylindrical roller bearings. NN type. Tapered bore. Cylindrical bore. NNU type. Tapered bore. Cylindrical P4：JIS class 4 UP：Special high precision.
High-precision double row cylindrical roller bearings are available in the NN and NNU designs. These bearings feature a low cross sectional height, high load
Bearings, units and housings Radial internal clearance or preload in mounted bearings d, D, B, C, C0, Pu . NNU 4920 BK/SPW33 .. For additional information about the meaning and limitations of the product data, refer to Cylindrical