Mssoomm Linear Motion Shaft Rod Guide D 12mm x L 54.33 inch / 1380mm 4Pcs, Hollow Rod D 12mm Inner Hole 6mm Smooth Steel Case Hardened Chrome Plated for 3D Printer, DIY, CNC - h7 Tolerance

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Mssoomm Linear Motion Shaft Rod Guide D 12mm x L Features

• Unlike solid linear shaft rod optical shafts, hollow linear rod can reduce weight and improve bending and torsional resistance, with better strength-to-density ratio and specific stiffness, suitable for CNC, 3D printer, automatic machinery, injection molding machine, engraving machine

• Tolerance: Metric h7, hardness about HRC 58-60, hardening depth: 0.8-3mm, straightness≤ 0.07/1000mm, chrome thickness: 0.015mm-0.02mm, roundness: no more than 3μm, surface roughness: ra0.1m - 0.35m

• Adapting C45 high quality carbon steel, high frequency quenching, surface chromium plating. Using mirror polishing technology, more durable and corrosion-resistant.

• Humanization Design: Chamfer on both ends, easier to install linear bearings and won't hurt fingers when installing it

• We can customize the linear rail, including the length and end processing, showed as image 4. With full series of diameters: 5, 6, 8, 10, 12, 13, 14, 16, 20, 25, 30, 35, 40, 50mm and so on, any special needs, please give us message

About Mssoomm Linear Motion Shaft Rod Guide D 12mm X L

Specifications: Brand: Mssoomm Material: High Quality Carbon Steel (C45#) Hardness: 58-60 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 0.1 - 0.35 Color: Silver This items includ: 4Pcs 12mm x 54.33 inch / 1380mm hollow linear rail shaft rod with inner hole 6mm 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 If you can accept the lead time as 45 natural days, we can ship the items to you by sea, the price will be lower, please message us. 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 4