... speed/limitting speed runnining Single Row Cylindrical roller bearings Cylindrical roller bearings has high load and ... single row cylindrical roller bearings, double row cylindrical roller bearings and muti-row cylindrical roller bearings. The widely used bearings are cylindrical roller bearings ... NUP, N, NF (for single-row bearings), NNU, and NN (for double-row bearings depending on the design or ...