{"id":4384,"date":"2025-07-04T05:01:31","date_gmt":"2025-07-04T12:01:31","guid":{"rendered":"https:\/\/guxiangjs.com\/?post_type=product&p=4384"},"modified":"2025-07-04T05:01:31","modified_gmt":"2025-07-04T12:01:31","slug":"rjmp-10-rj4jp-01-08-linear-bearing-3d-printer-replacement-lm8uu-lm10uu-bearing","status":"publish","type":"product","link":"https:\/\/guxiangjs.com\/zh\/shop\/rjmp-10-rj4jp-01-08-linear-bearing-3d-printer-replacement-lm8uu-lm10uu-bearing\/","title":{"rendered":"RJMP-10 RJ4JP-01-08 Linear Bearing 3D Printer Replacement LM8UU LM10UU Bearing"},"content":{"rendered":"
    \n
  1. Performance
    \n\u2022 Self-Lubricating Polymer Matrix \u2013 Molded from a proprietary high-performance plastic blend (comparable to iglidur\u00ae J) filled with solid lubricants; eliminates the need for external grease or oil while delivering a friction coefficient \u2248 0.12 against hardened steel shafts.
    \n\u2022 Vibration-Damping & Silent Motion \u2013 The homogeneous polymer structure attenuates resonance and reduces operating noise by up to 25 dB compared with recirculating ball bearings, ideal for quiet desktop printers.
    \n\u2022 Wear-Resistant Under Load \u2013 Supports dynamic loads of 250 N (RJ4JP-01-08) to 450 N (RJMP-10), with tested service life exceeding 1 000 km at 60 mm s\u207b\u00b9 on \u00d88\u2013\u00d810 mm chrome-plated rods.
    \n\u2022 Debris-Tolerant Design \u2013 Absence of steel balls and open raceways prevents clogging from filament dust or wood composite particles; operates reliably in environments where greased ball bearings quickly bind.<\/li>\n
  2. How to Use on a 3 D Printer
    \n\u2022 Direct Drop-In Replacement \u2013 RJ4JP-01-08 replaces LM8UU on \u00d88 mm X\/Y axes; RJMP-10 substitutes for LM10UU on \u00d810 mm Z or gantry axes. Overall length and outer diameter match ISO LM-UU specifications, so no model redesign is required.
    \n\u2022 Shaft Compatibility \u2013 Pair with hardened or stainless smooth rods (surface roughness Ra \u2264 0.6 \u00b5m). Polymer bearings tolerate minor shaft imperfections better than ball types but still benefit from polished finishes for maximum life.
    \n\u2022 Installation Procedure \u2013 Gently press the bearing into the carriage or printed mount by hand or with a light arbor press; ensure axial alignment and avoid ovalizing the housing. Slide the assembly on the rod and verify smooth travel end-to-end.
    \n\u2022 Maintenance Interval \u2013 Because lubrication is intrinsic, routine service is limited to wiping rods with isopropyl alcohol every 200 hours to remove dust; replace bearings when play exceeds 0.05 mm or surface streaks appear.<\/li>\n
  3. User-Friendly Operation
    \n\u2022 Grease-Free Cleanliness \u2013 Solid-lubricant matrix keeps work areas free of oil splatter and eliminates the risk of contaminating belts, pulleys, or printed parts.
    \n\u2022 Lightweight Construction \u2013 Up to 40 % lighter than steel LM-series equivalents, reducing moving mass and enabling faster jerk\/acceleration settings without stepper overload.
    \n\u2022 Quick Extraction & Swap \u2013 No ball retainers to spill; bearings slide off the rod once end-stops are removed. Complete replacement of a printer\u2019s motion system can be performed with only a hex key and pliers in under 15 minutes.
    \n\u2022 Operating Temperature Range \u2013 Functions from \u201340 \u00b0C to +90 \u00b0C without softening or dimensional drift, covering typical heated-chamber and enclosure scenarios.<\/li>\n
  4. Quality & Longevity
    \n\u2022 Precision-Molded in ISO 9001 Facilities \u2013 Each bearing is inspected for ID tolerance (h6) and roundness < 8 \u00b5m to guarantee uniform preload and straight-line accuracy.
    \n\u2022 Extensive Endurance Testing \u2013 Laboratory trials simulate 24\/7 printing: 1 000 km linear travel at 40 mm s\u207b\u00b9 under 200 N load results in wear depth < 0.02 mm, maintaining dimensional accuracy over thousands of print hours.
    \n\u2022 Chemical & Corrosion Resistance \u2013 Polymer material is immune to rust and resists common cleaning agents, ABS\/ASA vapors, and mild acids or alkalis, ensuring dependable performance in varied workshop conditions.
    \n\u2022 Environmentally Safe & Recyclable \u2013 Free of PTFE powder, silicone oils, and heavy metals; bearings comply with RoHS, REACH, and are fully recyclable through standard industrial plastic streams.<\/li>\n<\/ol>","protected":false},"excerpt":{"rendered":"

    Performance \u2022 Self-Lubricating Polymer Matrix \u2013 Molded from a proprietary high-performance plastic blend (comparable to iglidur\u00ae J) filled with solid lubricants; eliminates the need for external grease or oil while delivering a friction coefficient \u2248 0.12 against hardened steel shafts. \u2022 Vibration-Damping & Silent Motion \u2013 The homogeneous polymer structure attenuates resonance and reduces operating […]<\/p>","protected":false},"featured_media":4385,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[30],"product_tag":[],"class_list":{"0":"post-4384","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-3d-printers-parts","8":"first","9":"instock","10":"taxable","11":"shipping-taxable","12":"purchasable","13":"product-type-variable"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product\/4384","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/comments?post=4384"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media\/4385"}],"wp:attachment":[{"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/media?parent=4384"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_brand?post=4384"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_cat?post=4384"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/guxiangjs.com\/zh\/wp-json\/wp\/v2\/product_tag?post=4384"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}