Usage Shaft for L.M. Bearing / Piston Rod For LM bearing moving equipment shaft for fitness equipment Guide Pillar, Side Rail. · Material : EN-8(D)/ EN-9 / EN-19 / EN-31 or as per customer requirement · Std size : 10mm to 100mm. above 100mm can be order · Std length : cut to customer length up to 7000mm · Hard chrome plating thickness : 20 to 25 micron · Surface Roughness : 0.2 RA · Surface Hardness : 60 HRC + 2 · Chrome surface hardness : 850 to 1000 HV · Straightness : 0.1 per meter max. · Chrome layer micro hardness: min. 900HV0.1 · Od Tolerance : g6