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Lengthened Type Linear Bearing LM...L Series
Lengthened Type Linear Bearing LM...L Series

Lengthened Type Linear Bearing LM...L Series


LM...L long linear bearings, also known as LM...L long linear ball bearings or LM...L long linear bushing bearings. LM is the code name for the Asian series in linear bearings, and L is the abbreviation for long. This type of bearing is mainly used in Asian markets where use metric units, such as Japan, Korea, and Singapore.


The bushing and steel balls of LM...L long linear bearing are made of high carbon bearing steel. The ball retainer is made of steel or synthetic resin POM material. The sealing ring, usually represented by U or P, is made of NBR.


The ball retainer is mounted inside the adjustable bushing together with the ball and sealed with a retaining ring (seal) from one side or both sides of the bushing to form linear bearings.


The bushing of LM...L long linear bearing is fully closed with an outer stop groove at each end.


LM...L long linear bearings are generally mounted to the corresponding extended linear bearing housings for use with linear shafts. This type incorporates two retainers of the standard type, and is therefore best suited for locations subject to a moment load. It is useful to reducing assembly man-hours.


Unlike ordinary ball bearings, the basic dynamic load rating of LM...L long linear bearings is less than the basic static load rating, and this value can be expanded to nearly three times as the size increases.


Due to the smooth surface, the product is convenient to be processed. In addition, it can be installed in any direction, and can work accurately requiring only one axis as the support. This linear bearing can well support the rotation of the shaft and the parts on the shaft, and can maintain the normal working position and rotating precision of the shaft. Hence, it is a good choice for users.


Linear bearings are widely used in electronic equipment, tensile testing machine and the digital three-dimensional coordinate measuring equipment, precision equipment, and multi axis machine tools, presses, tool grinder, automatic gas cutting machine, printer, card sorting machine, food packing machines and other industrial machinery sliding components.





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
LM4LUU 4 4 0 -0.010 8 0 -0.011 23 0 -0.30 - - - - 0.01 18 25 0.0048
LM5LUU 4 5 0 -0.010 10 0 -0.011 28 0 -0.30 20.4 0 -0.30 9.6 1.1 0.01 26.1 41.2 0.011
LM6LUU 4 6 0 -0.010 12 0 -0.013 35 0 -0.30 27 0 -0.30 11.5 1.1 0.015 33 54 0.016
LM8LUU 4 8 0 -0.010 15 0 -0.013 45 0 -0.30 35 0 -0.30 14.3 1.1 0.015 44 80 0.031
LM10LUU 4 10 0 -0.010 19 0 -0.016 55 0 -0.30 44 0 -0.30 18 1.3 0.015 60 112 0.062
LM12LUU 4 12 0 -0.010 21 0 -0.016 57 0 -0.30 46 0 -0.30 20 1.3 0.015 83 160 0.080
LM13LUU 4 13 0 -0.010 23 0 -0.016 61 0 -0.30 46 0 -0.30 22 1.3 0.015 83 160 0.090
LM16LUU 5 16 0 -0.010 28 0 -0.016 70 0 -0.30 53 0 -0.30 27 1.6 0.015 126 240 0.145
LM20LUU 5 20 0 -0.012 32 0 -0.019 80 0 -0.30 61 0 -0.30 30.5 1.6 0.02 143 280 0.180
LM25LUU 6 25 0 -0.012 40 0 -0.019 112 0 -0.40 82 0 -0.40 38 1.85 0.02 159 320 0.440
LM30LUU 6 30 0 -0.012 45 0 -0.019 123 0 -0.40 89 0 -0.40 43 1.85 0.02 254 560 0.480
LM35LUU 6 35 0 -0.015 52 0 -0.022 135 0 -0.40 99 0 -0.40 49 2.1 0.025 270 640 0.795
LM40LUU 6 40 0 -0.015 60 0 -0.022 151 (154) 0 -0.40 121 0 -0.40 57 2.1 0.025 350 820 1.170
LM50LUU 6 50 0 -0.015 80 0 -0.022 192 0 -0.40 148 0 -0.40 76.5 2.6 0.025 620 1622 3.100
LM60LUU 6 60 0 -0.020 90 0 -0.025 209 0 -0.40 170 0 -0.40 86.5 3.15 0.025 770 2040 3.500


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