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Standard Linear Bearing LM Series
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Standard Linear Bearing LM Series

Standard Linear Bearing LM Series


Linear bushing LM/LME presents most popular linear bearing in Europe. These types of linear bearings are widely used in different linear motion applications. LM/LME linear bushing has a steel outer ring with grooves for a circlip and a polyamide ball retainer with 3 to 6 ball circuits depending on size. On request linear ball bushing are also available in stainless steel. All linear bearings with the designation UU have seals from both sides.


PQB linear bushing, LM type is the linear motion system with unlimited stroke by applying with LM shaft. Because of the point contact between balls and LM shaft, minimum friction can be acquired and that can give you the high precision motion. Linear bushing serves the alignment of the balls toward the LM shaft by the single retainer and cylindrical shape of raceway. Outer sleeve is made of bearing steel, and inner and outer grinding processes are applied after heat treatment.


Linear bearings are divided into two series according to the specification: LM and LME series. The linear bearing LM is a standard type. The code LM series is used in Asia, Southeast Asian countries, Japan, Korea, China, etc. In terms of metric size, the tolerance of the outer diameter of the linear shaft is generally h7. The LME series is mostly used in Europe, the United States, Germany, Italy and other regions. In the inch size, there are also metric sizes, and the tolerance of the outer diameter of the linear shaft is generally g6. Two series of structural features, in addition to different sizes, different aperture tolerances, the structure is roughly the same.


Linear Bushing are widely used in precision equipment; computer and peripheral equipment, measuring equipment, auto recording equipment, and 3D measuring equipment, printing machines, food packing machines, auto-gas cutters and etc.



Bearing Model


Ball Number

Dimensions(mm)


Basic Load Rating(kN)


Weight(Kg)

Inner diameter Outer diameter Length External stop groove W MAX.
dr Tolerance D Tolerance L Tolerance B Tolerance D1 Dyn.C Stat.Co
LM3 4 3 0 -0.008 7 0 -0.009 10 0 -0.12 - - - - 0.008 7 11 0.00135
LM4 4 4 0 -0.008 8 0 -0.009 12 0 -0.12 - - - - 0.008 9 13 0.0019
LM5UU 4 5 0 -0.008 10 0 -0.009 15 0 -0.12 10.2 0 -0.20 9.6 1.1 0.008 17 21 0.004
LM6UU 4 6 0 -0.009 12 0 -0.011 19 0 -0.20 13.5 0 -0.20 11.5 1.1 0.012 21 27 0.0076
LM8SUU 4 8 0 -0.009 15 0 -0.011 17 0 -0.20 11.5 0 -0.20 14.3 1.1 0.012 18 23 0.0104
LM8UU 4 8 0 -0.009 15 0 -0.011 24 0 -0.20 17.5 0 -0.20 14.3 1.1 0.012 27 41 0.015
LM10UU 4 10 0 -0.009 19 0 -0.013 29 0 -0.20 22 0 -0.20 18 1.3 0.012 38 56 0.0295
LM12UU 4 12 0 -0.009 21 0 -0.013 30 0 -0.20 23 0 -0.20 20 1.3 0.012 42 61 0.0315
LM13UU 4 13 0 -0.009 23 0 -0.013 32 0 -0.20 23 0 -0.20 22 1.3 0.012 52 79 0.043
LM16UU 5 16 0 -0.009 28 0 -0.013 37 0 -0.20 26.5 0 -0.20 27 1.6 0.012 79 120 0.069
LM20UU 5 20 0 -0.010 32 0 -0.016 42 0 -0.20 30.5 0 -0.20 30.5 1.6 0.015 88 140 0.087
LM25UU 6 25 0 -0.010 40 0 -0.016 59 0 -0.30 41 0 -0.30 38 1.85 0.015 100 160 0.220
LM30UU 6 30 0 -0.010 45 0 -0.016 64 0 -0.30 44.5 0 -0.30 43 1.85 0.015 160 220 0.250
LM35UU 6 35 0 -0.012 52 0 -0.019 70 0 -0.30 49.5 0 -0.30 49 2.1 0.02 170 320 0.390
LM40UU 6 40 0 -0.012 60 0 -0.019 80 0 -0.30 60.5 0 -0.30 57 2.1 0.02 220 410 0.585
LM50UU 6 50 0 -0.012 80 0 -0.019 100 0 -0.30 74 0 -0.30 76.5 2.6 0.02 390 810 1.580
LM60UU 6 60 0 -0.015 90 0 -0.022 110 0 -0.30 85 0 -0.30 86.5 3.15 0.025 480 1020 1.860


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