... years experiences, we can supply many kinds of High Precision Linear bearings.Bearing Structure: consists of outer cylinder,retainer,balls, ... side seals.Premium grade raw material: GCr15 bearing steel cylinder,G10 class precision ... .2.Professional----- We can offer almost types of linear bearings (LM,LME,LMF,LMH,LMK,KH,etc)Size range ...