... , stainless steel, ceramic & plastic Designs includes: · Single row cylindrical roller bearings o Bearing series: N, NJ, NU, NUP· Double row ... cylindrical roller bearings o Bearing series: NN3000, NN4900, NNU4900· Four row cylindrical ... machinery industry etc Main market abroad:the Middle East ,Africa,European,South America and Asia. Notes: We can offer you ...