... , Sports Cylindrical Roller Bearings:Series: SL N NJ NU NUP NN NJ …NU200 single-row(NU,NJ,NUP,N,NF) 100 ... ,NJ,NUP) 100--160NN3000 double-row(NN,NNK,NN/W33,NNK/W33) 100--670NN4900 double-row(NN,NNK,NN/W33,NNK/W34) 100--320NNU4900 ... double-row(NN,NNK,NN/W33,NNK/W35) 100--600 ...