Super Print GT2 Idler Pulley 20 Toothless Bore 5mm for 3D Printer 9mm/10mm Width Timing Belt. (10pcs)

Crafted from high-strength aluminum alloy and finished with a precision anodized coating. This lightweight design effectively reduces motion inertia while offering superior corrosion and wear resistance. Built to withstand harsh conditions, it significantly extends the operational lifespan of your machinery under high-frequency use. Specifically engineered as a toothless (smooth) idler roller with a flawless cylindrical surface. It serves as an ideal guide or tensioning wheel, providing stable support without damaging the timing belt's teeth. This design effectively prevents lateral belt jumping or derailment during high-speed operations, ensuring precise tracking. Equipped with two high-quality motor-grade bearings (Double Bearings). Compared to single-bearing designs, this dual-structure ensures more even load distribution and extremely low rotational resistance. It effectively eliminates axial vibration and jitter, guaranteeing quiet, stable long-term operation and significantly enhancing motion accuracy. 20 tooth 5mm bore for 9mm or 10mm wide GT2 timing belts. Its compact yet robust structure saves space and allows for effortless installation onto various tensioners, pressure wheel brackets, or guide mounts—ready to use right out of the box without complex debugging. An ideal accessory not only as a belt anti-jump pressure wheel for large-format 3D printers but also widely applicable to the belt guidance systems of CNC engraving machines, laser cutters, plotters, and automated robotic arms. It is an essential component for resolving belt slack, eliminating jumping noise, and upgrading overall system stability.