1. Compositions:  Rambler Crossing Roller Guideway is composed by 2pcs guideways which have V shape raceways,rolling cages, cylindrical rollers and so on. The cylindrical rollers which intersect each other are moving on V shape rolling surface repeatedly;it can bear the loads from all directions,and achieve the high-precision and smooth linear movement. 2.Features:  Low rolling friction resistance,high stability;  Small launching friction,and good following function; Big interface area,small elastic deformation,more effective moving vehicle,which can achieve the movement of high rigidity and high load; Flexible structure design,convenient installation and use.