The rubber shields on LM12UU are designed to offer protection against the entry of some dirt and so on, as well as lighter mechanical damage. LM12UU bearings also help to contain the lubricant / grease. LM12UU manufactured with rubber seals these linear ball bushings are characterised by their smooth movement, high rigidity and low friction, they are easy to maintain or replace and have a good life span in service.LM12UU consist of steel outer housings with sets of balls running around their own tracks within the low friction polyamide / steel inner raceways. LM12UU outer raceway is solid with no relief machined so clearances are preset, choose the adjustable type if you need to control clearances.
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