... . linear shaft+linear motion bearing+shaft support 2. All series: LM, LMF.LMK,SBR, SMA,SK high quality linear bearingAdvantages:1 ... Thickness: 3μm~5μmSeries:Linear bushing bearings: LM, LM..U, LM..L, LM..LUU, LMK, LM..AJ, LMF, LMF..L, LMH, LMH..L, LMFC ...