Techno Linear Motion Catalog42Technical InformationNominal Life ExpectancyThe nominal life expectancy is achieved, orexceeded 90% of the time before the first indication offatigue appears.L=Lh=Lh=L[m]nominal life expectancy in metersLh[h]nominal life expectancy in operating hoursC[N]dynamic loadP[N]dynamic equivalent loadpLife expectancy index:ball-bearing linear guides: p = 3roller bearing linear guides: p = 10/3833H x nCpCpDynamic Loading CapacityThe fatigue behavior of the materials determines thedynamic loading capacity. The life expectancy isdependent on:- the load on the linear guide- the travel speed of the linear guide- the statistical contingency of the first defect takingplaceFundamental PrincipleThe specification of a linear guide is based on theloading capacity of the individual element. Theloading capacity is described by:- the dynamic load data C- the static load data C0- the static moments Mx,My,MzThe basis of the dynamic load data, according to DINstandards, is a nominal life expectancy of 100,000 mtravel. For a nominal life expectancy of 50,000 m, theload data is 20% higher than those values supplied inthis catalog.Loading Capacity and Life ExpectancySelecting a Ball Screw SlideFirst, you must determine...Travel DistanceLoadOrientation of LoadCycle TimeMax rpm of ScrewMax SpeedMax AccelerationRequired Torque to Drive LoadWith this information, you can start to determine which ball screw slide is suitablefor your application.(2)(3)(1)Cp() 1 x 105mP( )P()1666VPxxx
