linear system - Profilex sa

PRECISION SHAFTSStraightnessDefinition: The tolerance zone is limited in the measurement plane by two parallelstraight lines with distance t.CircularityDefinition: The tolerance zone is limited in the measurement plane perpendicular tothe axis by two concentric circles with distance t whose common centrelies on the reference axis.The precision of the straightness of our shafts varies with the diameter.< Ø 10 mm: < = 0,3 mm/mfrom Ø 10 mm to Ø 20 mm: < = 0,2 mm/mfrom Ø 20 mm: < = 0,1 mm/mThe straightness is always specified over the standard length of 1.0 m. The actual straightness of afixed length must therefore be converted.Example:Straightness of a shaft 650 mm in length with diameter 12 mm650 mm x 0,2 / 1000 = 0,13 mmCircularitymeasurementon prismsStraightnessmeasurementon a flat plateStraightness = Circularity /2The straightness tolerance is half the gauge display value when turning the shaft by 360°,straightness measurement per ISO 13012.MINITEC LINEAR SYSTEM 111