OD 8mm x 400mm Bearing Steel Cylinder Liner Shaft Optical Axis

Description :? ? OD 8mm x 400mm Bearing Steel Cylinder Liner Rail Linear Shaft Optical Axis ? Quantity : 1(one)pcs Material : bearing steal,GCr15 Hardness : About ?HRC58?￣ Precision : g6 ? Surface roughness : Below 1.5??M(Rmax) Surface hard-thickness : 0.8??~3mm Outer diameter : 8mm Length : 400mm Staightness : Below 5??M/100mm Hard chrome thickness : 3.0??M(Rmax) ? Package includes :? ? 1 x Linear ?Optical Axis ? Details pictures :?

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