Linear bearings are divided into two series of the LM and LME series. The symbol LM series for Asia, Southeast Asia, Japan, Korea and China.
LME series used for Europe, the United States, Germany, Italy and other regions. Two series of structural features, in addition to different sizes, different diameter tolerance, its structure are similar.

Example 1: LM 203242 UU OP
LM said that the first series of standard linear
203242 said outside diameter aperture size of the length of the structure
UU said the double seal structure, said open-type OP

Example 2: LME 203245 UU AJ
LME said second series of standard linear
203245 said outside diameter length of the aperture size of the structure
UU AJ said double seal structure, said adjustable gap