PBC Linear NIPDM20 0300 SL Pre Drilled Linear Shaft, Polished Carbon Steel, 20 mm Dia, 300 mm Lg G7454002 Number of Pieces 32 Measurement Number of Pieces 32 Measurement Type Metric Overall Length 44 in Surface Hardness Minimum 60 HRC Lined Bearings Standards ISO System of Measurement Metric Shaft Material Finish Polished Shaft Material Carbon Steel Shaft Drilling Pre Drilled Shaft Material Grade 1060 Shaft Hardness RC 60 Product Type Linear Shaft Shaft Hole Spacing 150 mm Shaft End to Hole 75 mm Surface Roughness 8 12 RMS Roughness 8 12 uin RMS Surface Hardness Minimum 60 HRC Mounting Hole Type Tapped Number of Mounting Holes 2 Shaft Type Pre Drilled Shaft End Type Plain Ends Series NIPDM Core Type Solid Mounting Hole Center to Shaft End 75 mm Weight Per Meter 2