Linear Guide Rail Set, 20mm x 1200mm, 2 Rails 4 Blocks

Linear guide rail set provides smooth, accurate linear motion for CNC builds and automation, helping reduce stutter and vibration under load. This 1200 mm (47.2 in) kit pairs carbon steel shafts with a rigid aluminum base, plus sealed SC20 slide blocks with ball bearings for low-friction travel. Designed for repeatable positioning, it supports stable movement in router, mill, lathe, 3D printer, and laser engraver projects where alignment and reliability matter.

• Delivers smooth, low-noise travel with sealed slide blocks and ball bearing design for low friction movement


• Handles higher loads with up to 882 N dynamic and 1370 N static capacity per block for stable motion control


• Improves accuracy with precise shaft straightness and consistent dimensions for repeatability and positioning


• Includes complete kit: 2 rails, 4 SC20 slide blocks, and 4 rail supports for straightforward assembly


• Fits automation and DIY builds including CNC routers, mills, lathes, 3D printers, laser engravers, and sleds

Built for demanding shop and workshop setups, this linear rails and bearings kit combines corrosion-resistant chrome-plated surfaces with a sturdy aluminum base to help maintain alignment over time. The pre-matched components make it easier to design a reliable motion system without sourcing parts separately—ideal for upgrades, repairs, or new machine builds. If your project needs stable, repeatable linear travel over a full 1200 mm span, grab yours today and keep your motion platform running smooth.

• Guide rail length: 47.2 in / 1200 mm (2 pcs)


• Shaft diameter: 20 mm


• Slide blocks: SC20 (4 pcs), size 2 x 2.1 x 1.6 in / 50 x 54 x 41 mm


• Rail supports: 4 pcs


• Material: high carbon steel & aluminum; chrome-plated surface


• Dynamic load (per block): 882 N


• Static load (per block): 1370 N


• Mounting hole distance A/B: 1.6 in / 40 mm


• Product dimensions (L x W x H): 47.2 x 4.7 x 2 in / 1200 x 120 x 51 mm


• Net weight: 15.7 lbs / 7.1 kg