... 4.move soomthly 5.ISO9001 certification GCr15 nylon or steel linear bearings LMB 64UU We can offer almost types of ... linear bearing(LM,LME,LMF,LMH,LMK,KH,etc)Size range ... is from 6-80mm. Linear motion bearings have the characterized of smooth movement,low friction ... hesitate to contact with us . GCr15 Nylon or steel linear bearings LMB 64UU