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Open Type Linear Bearing LM...OP Series
Open Type Linear Bearing LM...OP Series

Open Type Linear Bearing LM...OP Series


This type features a slit as wide as one train of balls (50° to 80°) on the basis of the standard type, and is therefore suitable for installation where the LM shaft is supported by pillars or supporting bases. This allows easy connection to the guide rail and brings convenience for usage in some special machinery. Additionally, this makes clearance adjustment easy.


The standard open type linear bearings has been divided into three types, LM...OP, LME...OP and LMB..OP. They are suitable for different regions and the bearing type LM...OP is mainly used in Asian markets due to the metric dimensions, which is suitable for shaft diameter from 10mm to 80mm.


Unlike ball bearings, the basic dynamic load rating of LM...OP linear bearings is less than the basic static load rating, and as the size increases, the difference in this value will also increase significantly, up to twice the maximum.


The linear bearings are widely applied to agriculture, robotic, pick and drop, pick and plug, 3D printing, printing, chemical and engineering industries.




Bearing Model



Ball number

Dimensions(mm) MAX.


Basic Load Rating(kN)


Weight(kg)

Inner diameter Outer diameter length External stop groove W h θ
dr Tolerance D Tolerance L Tolerance B Tolerance D1 Dyn.C Stat.Co
LM12UU-OP 3 12 0 -0.009 21 0 -0.013 30 0 -0.20 23 0 -0.20 20 1.3 8 80° 0.012 42 61 0.025
LM13UU-OP 3 13 0 -0.009 23 0 -0.013 32 0 -0.20 23 0 -0.20 22 1.3 9 80° 0.012 52 79 0.034
LM16UU-OP 4 16 0 -0.009 28 0 -0.013 37 0 -0.20 26.5 0 -0.20 27 1.6 11 80° 0.012 79 120 0.052
LM20UU-OP 4 20 0 -0.010 32 0 -0.016 42 0 -0.20 30.5 0 -0.20 30.5 1.6 11 60° 0.015 88 140 0.069
LM25UU-OP 5 25 0 -0.010 40 0 -0.016 59 0 -0.30 41 0 -0.30 38 1.85 12.5 50° 0.015 100 160 0.188
LM30UU-OP 5 30 0 -0.010 45 0 -0.016 64 0 -0.30 44.5 0 -0.30 43 1.85 15 50° 0.015 160 220 0.21
LM35UU-OP 5 35 0 -0.012 52 0 -0.019 70 0 -0.30 49.5 0 -0.30 49 2.1 17.5 50° 0.02 170 320 0.335
LM40UU-OP 5 40 0 -0.012 60 0 -0.019 80 0 -0.30 60.5 0 -0.30 57 2.1 20 50° 0.02 220 410 0.5
LM50UU-OP 5 50 0 -0.012 80 0 -0.019 100 0 -0.30 74 0 -0.30 76.5 2.6 25 50° 0.02 390 810 1.34
LM60UU-OP 5 60 0 -0.015 90 0 -0.022 110 0 -0.30 85 0 -0.30 86.5 3.15 30 50° 0.025 480 1020 1.61
LM80UU-OP 5 80 0 -0.015 120 0 -0.022 140 0 -0.40 105.5 0 -0.40 116 4.15 40 50° 0.025 735 1600 3.65


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