{"product_id":"linear-bearing-lm8uu","title":"Linear bearing LM8UU","description":"\u003cp style=\"text-align: justify;\"\u003eThe LM8UU linear bearing is a standard replacement linear ball bearing widely used by Prusa Research on all its Original Prusa FDM printers from the MK, MINI, and CORE One series. Its function is to guide the linear motion of an Ø8 mm smooth shaft along one of the machine's axes, ensuring smooth movement without transverse play and a low friction coefficient, a necessary condition for the dimensional accuracy of prints.\u003cbr\u003e\u003cbr\u003eThe bearing is factory-lubricated: no additional greasing is required before assembly, which simplifies its installation for workshop maintenance. Its standardized dimensions (24 mm length, 15 mm outer diameter, 8 mm inner diameter) make it an interchangeable spare part in the LM8UU format, to be kept in stock in workshops operating a multi-machine fleet of these generations.\u003c\/p\u003e\n\u003ch2\u003eImplementation\u003c\/h2\u003e\n\u003cp style=\"text-align: justify;\"\u003eReplacement occurs when the bearing shows play, hard spots during movement, abnormal noise in motion, or in case of visible dimensional irregularities on printed parts (axis artifacts, irregular vertical surfaces). The operation is performed with the printer turned off, according to the procedure documented on the Prusa knowledge base (help.prusa3d.com), by selecting the relevant printer model and following the repair manual. After reassembly, a manual shaft-by-shaft movement test should confirm the absence of hard spots, then a test print validates dimensional quality.\u003c\/p\u003e\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003ePart Type\u003c\/th\u003e\n\n\u003ctd\u003eLinear ball bearing (LM8UU standard)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eLength\u003c\/th\u003e\n\n\u003ctd\u003e24 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eOuter diameter\u003c\/th\u003e\n\n\u003ctd\u003e15 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eInner diameter\u003c\/th\u003e\n\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eLubrication\u003c\/th\u003e\n\n\u003ctd\u003eFactory lubricated (no greasing required before assembly)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eIncluded in delivery\u003c\/th\u003e\n\n\u003ctd\u003e1 LM8UU linear bearing\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eDocumentation\u003c\/th\u003e\n\n\u003ctd\u003eInstallation procedure on help.prusa3d.com (per printer model)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eUsage\u003c\/th\u003e\n\n\u003ctd\u003eSpare part \/ preventive maintenance\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n  \u003ctr\u003e\n\n\u003cth\u003eBrand\u003c\/th\u003e\n\n\u003ctd\u003ePrusa Research\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/table\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cul\u003e\n\n  \u003cli\u003ePrusa Research MK, MINI, and CORE One series printers\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MK2, MK2S, MK2.5, MK2.5S\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MK3, MK3S, MK3S+\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MK3.5, MK3.5S\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MK3.9, MK3.9S\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MK4, MK4S\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa MINI and MINI+\u003c\/li\u003e\n\n  \u003cli\u003eOriginal Prusa CORE One and CORE One+\u003c\/li\u003e\n\n  \u003cli\u003eNot compatible with XL, SL1 \/ SL1S, CW1 \/ CW1S, HT90, INDX, CORE One L, and enclosures (MKx Enclosure, XL Enclosure, MINI Enclosure)\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Volumic","offers":[{"title":"Default Title","offer_id":56893894459736,"sku":"IDF__12190_IDS__1588","price":1.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0938\/8979\/0296\/files\/9f9e02a6-c653-440d-8079-f2c7c39f5d9a.jpg?v=1779701826","url":"https:\/\/3dprint.shop\/en\/products\/linear-bearing-lm8uu","provider":"3dPrint.Shop","version":"1.0","type":"link"}