Linear rail set kit includes 2Pcs 20mm 19.69 inch / 500mm chrome plated linear shaft rod + 4Pcs fixed shaft support SK20 + 4Pcs pillar block bearings SCS20UU Linear motion bearing kit are made of carbon steel, linear Bearings made of GCr15 bearing steel with aluminum alloy housing. The case hardness could be reach to 58-64 HRC. Durable and corrosion-resistant. Widely applied in CNC, 3D printer, automatic machinery, injection molding machine, engraving machine, etc. especially in bearing purpose Perfect combination of main shaft rod rail and aluminum alloy support, which nicely stabilizes the original rail. Industrial-grade standard bearing block, with high precision linear bearing inside We can customize the linear rail, including the length and end processing, with differert slider block to choose which showed in the image, please tell us if you need. We provide full range of different diameter of the linear rail shaft rod: 5, 6, 8, 10, 12, 13, 14, 16, 20, 25, 30, 35, 40, 50mm and so on. Specifications:
Brand: Mssoomm
Material: High Quality Carbon Steel (C45#)
Hardness: 58-64 HRC
Surface Hard-thickness: 0.8 – 2.5mm
Surface Roughness: 0.8S – 1.6S
Straightness: Below 5μm/100mm
Surface Chrome Thickness: 15um-20um
Surface Finish Quality: Ra 0.8
Color: Silver
This item includes:
2pcs 20mm x 500mm Linear Rail Shaft Rod
4pcs SCS20UU Bearing Block
4pcs SK20 Fixed Support
Lead Time: If this item is not FBA, the lead time is 7-10 Business Days except for for Chinese National Day holiday and Spring Festival

Please Note:
- We can offer the linear motion rail shaft rod in any length, pls contact us.
- We can process the end of the rail as you need, some examples you can see the image 8