High Precision LM12UU 12mm Linear Slide Block Bearing for CNC
| Item No : | LM12UU |
| Size (d*D*B) : | 12x21x30mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.0315KG |
| MOQ : | 50 pcs |
⚙️Product Description:
Seeking a high-precision, low-friction solution for your linear automation systems? Our LM12UU Linear Motion Ball Bearing Bushing (Size: 12x21x30mm) is engineered to deliver smooth, unrestricted linear travel along 12mm cylindrical shafts. Featuring a high-quality resin retainer and double-sided rubber seals, this standard metric bushing minimizes noise and extends equipment life under continuous operation. As an agile B2B bearing trader, we supply this high-demand component under our competitive proprietary “RMO” brand for bulk orders, while seamlessly offering sourcing and trade supply for other world-leading premier bearing brands to suit your exact manufacturing standards.
⚙️Product Features:
- Standard Metric Geometry: Precisely manufactured to 12mm (Bore) x 21mm (OD) x 30mm (Length) for a 100% seamless drop-in replacement in worldwide linear guide rail setups.
- Low Friction & High Precision: Optimized internal steel ball recirculation tracks guarantee ultra-smooth travel, low heat generation, and precise linear positioning.
- Double Rubber Shields (UU): Equipped with premium lip seals on both sides to effectively retain lubrication while blocking dust, wood shavings, and manufacturing debris.
- Industrial Chrome Steel (GCr15): The outer cylinder and precision balls are deeply hardened to maximize load capacity, rigidity, and resistance to operational wear.
- Flexible Multi-Brand Supply: Maximize your profit margins with our factory-direct RMO brand, or utilize our global network to source authentic market-leading brands.
⚙️Product Application:
Due to its lightweight profile, high precision, and universal compatibility, the LM12UU bushing is a cornerstone component in:
- CNC routers, DIY laser engravers, and plasma cutting machine slide axes.
- Desktop and industrial-grade 3D printers (XYZ axis guide rods).
- Automated factory assembly lines, pick-and-place robotics, and sorting mechanisms.
- Electronic component manufacturing equipment and semi-conductor handling tools.
- Precision laboratory testing apparatus, measuring instruments, and medical sliders.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
About Rimao
Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!
⚙️Technical Parameters:
| Item No. | LM12UU |
| Size | 12x21x30mm |
| Type | Linear Motion Ball Bearing Bushing |
| Sealing Form | |
| Ball Rows | 4 Rows |
| Material | Chrome steel GCr15 |
| Cage material | Nylon / Steel |
| Brand | RMO/Neutral/OEM/Other Brands |
| Package | |
| Lead Time | |
| Shipping Port | Guangzhou, Ningbo, Shanghai |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |
| Model No. | d | D | H | m |
| LM3 | 3 mm | 7 mm | 10 mm | 1.4 g |
| LM4 | 4 mm | 8 mm | 12 mm | 1.9 g |
| LM5 | 5 mm | 10 mm | 15 mm | 4 g |
| LM6 | 6 mm | 12 mm | 19 mm | 8 g |
| LM6GA | 6 mm | 12 mm | 19 mm | 8 g |
| LM8S | 8 mm | 15 mm | 17 mm | 11 g |
| LM8SGA | 8 mm | 15 mm | 17 mm | 11 g |
| LM8 | 8 mm | 15 mm | 24 mm | 16 g |
| LM8GA | 8 mm | 15 mm | 24 mm | 16 g |
| LM10 | 10 mm | 19 mm | 29 mm | 30 g |
| LM12 | 12 mm | 21 mm | 30 mm | 31.5 g |
| LM13 | 13 mm | 23 mm | 32 mm | 43 g |
| LM16 | 16 mm | 28 mm | 37 mm | 69 g |
| LM16GA | 16 mm | 28 mm | 37 mm | 69 g |
| LM20 | 20 mm | 32 mm | 42 mm | 87 g |
| LM25 | 25 mm | 40 mm | 59 mm | 220 g |
| LM25GA | 25 mm | 40 mm | 59 mm | 220 g |
| LM30 | 30 mm | 45 mm | 64 mm | 250 g |
| LM35 | 35 mm | 52 mm | 70 mm | 390 g |
| LM38GA | 38 mm | 57 mm | 76 mm | 490 g |
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