12mm x 400mm (0.472 x 15.75 inch) Linear Motion Rods Shaft (Pack of 2)- Case-Hardened Chrome Linear Rails Guide for 3D Printers, CNC, Robotics & DIY - Metric h8 Tolerance

CtopoGo Precision Linear Motion Shafts: Power Your Innovations with Industrial-Grade Reliability Engineered for makers, engineers, and professionals, CtopoGo’s linear motion shafts deliver unmatched precision and durability. Whether you’re assembling a high-speed 3D printer, retrofitting a CNC machine, or building automated prototypes, these rods ensure smooth, stable performance under demanding conditions. Why Choose CtopoGo Linear Shafts? Robust Material Science Forged from 45# carbon steel and hardened to HRC55-62, our shafts withstand intense mechanical stress without bending or wearing down. The 0.01mm chrome plating adds an extra shield against rust and abrasion, even in humid or dusty workshops. Zero-Compromise Precision Every shaft undergoes rigorous QC checks to meet ultra-tight tolerances: Straightness: ≤0.1mm deviation per meter This guarantees seamless integration with LM8UU bearings, linear rails, and other motion components. Silent, Low-Friction Performance The mirror-like chrome finish (Ra0.05-0.08 roughness) minimizes vibration and energy loss, ensuring buttery-smooth movement for delicate tasks like PCB milling or miniature model creation. Endless Application Possibilities 3D Printing: Stabilize X/Y axes in CoreXY, Cartesian, or Delta printers. CNC Machines: Reinforce Z-axis guides for precise drilling and carving. DIY & Robotics: Build custom camera sliders, automated curtains, or drone gimbals. Industrial Use: Maintain accuracy in conveyor systems, laser cutters, and assembly lines. Technical Specifications: Material: 45# Carbon Steel Hardness: HRC55-62 Surface Roughness: Ra0.05-0.08 Straightness: ≤0.1/1000mm Chrome Thickness: 0.01mm Diameter Tolerance: -0.01 to -0.03mm Length Tolerance: ±0.1mm Upgrade Your Builds with CtopoGo—Where Precision Meets Durability!

• What You Get: 2PCS 12mm x 400mm Linear Motion Rods Set
• Premium 45# Carbon Steel Construction: Crafted from durable 45# carbon steel and hardened to HRC55-62, these linear shafts resist wear, deformation, and corrosion. Perfect for heavy-duty CNC machining, high-speed 3D printing, and repetitive industrial automation tasks
• Ultra-Smooth Chrome Plating & Precision Finish: Features a 0.01mm chrome-plated layer and Ra0.05-0.08 surface roughness for frictionless motion, reduced noise, and extended lifespan—ideal for precision-driven applications like laser engravers, robotic arms, and linear guide systems
• Engineered for Flawless Accuracy: Strict diameter tolerance (-0.01 to -0.03mm) and ≤0.1/1000mm straightness ensure seamless compatibility with bearings and pulleys. Achieve micron-level precision in CNC milling, automated packaging, or custom DIY builds
• Multi-Industrial Versatility: Beyond 3D printers and CNC routers, these rods excel in robotics, textile machinery, medical devices, and lab equipment. Upgrade your workshop, prototyping studio, or small-scale production line with reliability