Linear Guide Rail Set, SBR20 800 To 1200mm, 2 PCS 31.5 To 47.2-Inch In SBR20 Rails & 4 PCS SBR20UU Slide Blocks Or 4 SBR20UU Bearings. Ideal For CNC Machines Automation Projects And DIY Crafts

About these items: Durable & Long-lasting: Each linear rail is crafted from high carbon steel and aluminum with a chrome-plated surface for excellent rust resistance, ensuring high durability and reliability for prolonged use. Low Noise Sliding: Integrated ball bearings in aluminum SBR20UU slide blocks work seamlessly with carbon steel shafts, delivering smooth, quiet, and efficient motion for labor-saving control. High Precision Performance: Circular shaft dimensions and straightness ensure superior accuracy, repeatability, and stability, making installation and operation straightforward with precise mounting holes. Versatile Applications: Ideal for high-load automation equipment and DIY projects such as CNC machines, 3D printers, router sleds, laser engravers, and trainer rocker plates. Various Sizes Available: Choose from different guide rail lengths (31.5", 39.4", or 47.2") to suit your project needs while enjoying consistent quality and performance. Key Differences: The SBR20-800 mm set includes guide rails of 31.5" length, with a net weight of 14.1 lbs (6.4 kg) and a package size of 35.4 x 5.7 x 3.1 in (900 x 145 x 80 mm). The SBR20-1000 mm set features 39.4" rails, weighs 17.4 lbs (7.9 kg), and has a package size of 43.3 x 5.7 x 3.1 in (1100 x 145 x 80 mm). The SBR20-1200 mm set offers longer 47.2" rails, with a net weight of 20.3 lbs (9.2 kg) and a package size of 51.6 x 5.7 x 3.1 in (1310 x 145 x 80 mm). Specifications: Model Numbers: SBR20-C 800L, SBR20-C 1000L, SBR20-C 1200L Slide Block Model: SBR20UU Guide Rail Length Options: 31.5 in, 39.4 in, 47.2 in Shaft Diameter: Φ20 mm Dynamic Load (per block): 882 N Static Load (per block): 1370 N Material: High Carbon Steel & Aluminum Mounting Hole Distance A & B: 1.4 in (35 mm) Slide Block Size (L x W x H): 2 x 1.9 x 1.5 in (50 x 48 x 39 mm) Package Contents: SBR20-800 mm Set: 2 x SBR20 800 mm Linear Guide Rails with Supports, 4 x SBR20UU Sliding Blocks SBR20-1000 mm Set: 2 x SBR20 1000 mm Linear Guide Rails with Supports, 4 x SBR20UU Sliding Blocks SBR20-1200 mm Set: 2 x SBR20 1200 mm Linear Guide Rails with Supports, 4 x SBR20UU Sliding Blocks