Linear Rail Guide Kit HGR20, 2x600mm Rails, Ball Screw

HGR20 linear rail guide kit delivers smooth, accurate CNC motion with a complete 600 mm rail-and-ball-screw set built for repeatable positioning and stable travel. Designed for DIY CNC routers, lathes, milling machines, 3D printers, and automation projects, it pairs low-friction slide blocks with a wear-resistant ball screw, end supports, coupling, and nut housing. High-carbon steel rails with a corrosion-resistant finish help maintain precision in daily use, even in humid workshops.

• Includes 2× 600 mm linear rails, 1× ball screw, 4× HGH20CA slide blocks, BK12/BF12 supports, coupling, and nut housing for a complete build.


• Delivers quiet, low-friction travel with ball-bearing slide blocks for smoother linear motion and reduced vibration on CNC and 3D printer axes.


• Maintains repeatable accuracy with 0.1–0.22 μm surface finish and 5 mΩ straightness for consistent positioning over long travel.


• Resists rust with electroplated coating (≥10 μm) on high-hardness rails to handle humid basements, garages, and busy shops.


• Handles demanding loads with up to 27.76 kN static and 17.75 kN dynamic capacity for heavier gantries and tooling setups.

Build cleaner cuts, smoother passes, and more reliable automation with a linear guide rail and ball screw kit engineered for precision motion control. Pre-drilled mounting holes help speed alignment, while the hardened rail and supported ball screw reduce backlash risk and wear over time. Ideal for upgrading a DIY CNC router, retrofitting a small mill, or building a custom linear stage where stability matters. Grab yours today and keep your next machine build moving straight, quiet, and consistent.

• Rail length: 600 mm / 23.62 in (2 rails)


• Rail diameter: Ø 25 mm / 0.98 in


• Slide block type: HGH20CA (4 blocks)


• Static load capacity: 27.76 kN / 180 kg


• Dynamic load capacity: 17.75 kN / 116 kg


• Straightness: 5 mΩ / 100 mm


• Surface finish: 0.1–0.22 μm


• Material: High carbon steel & aluminum


• Finish: Electroplated coating ≥ 10 μm


• Kit contents: 2× rails, 1× ball screw, BK12/BF12 end supports, coupling, nut housing