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LM8LUU Linear Motion Bearing For 3D Printers
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The LM8LUU Linear Motion Bearing for 3D Printers is a precision-engineered 8mm linear bearing designed to deliver stable, smooth, and accurate linear movement in 3D printers and automation systems. Its extended 45mm body length significantly improves support compared to standard LM8UU bearings by minimizing twisting, reducing play, and enhancing print bed stability.
Inside the 8mm bore, four recirculating circuits of hardened steel balls provide exceptionally low-friction motion, enabling NEMA 17 stepper motors to move heavy carriages efficiently while maintaining positioning accuracy. The 15mm outer diameter features dual retaining grooves for secure installation, while double rubber seals (UU design) prevent dust and debris from entering the bearing, ensuring reliable long-term performance.
Whether you're upgrading a Prusa-style printer or building a custom CNC or motion system, the LM8LUU linear motion bearing offers dependable precision, durability, and consistent linear movement.
| Specification | Value |
|---|---|
| Model Designation | LM8LUU |
| Bearing Type | Extended Linear Motion Ball Bearing |
| Inner Diameter (Bore) | 8mm |
| Outer Diameter | 15mm |
| Overall Length | 45mm (Industry Standard L-Series) |
| Seal Type | UU (Double Rubber End Seals) |
| Outer Shell Material | Carbon Steel |
| Ball Retainer Material | Polymer |
| Dynamic Load Rating (C) | ~431 N |
| Static Load Rating (Co) | ~784 N |