Bearing steel or stainless steel overweight load linear guide RGH55HA (roller type) 1,High rigid and load bearing 2,Sports smooth 3,Totally-sealing dustproof 4,Can endure high torque 5,Easy installation RGH55HA roller type overweight load linear guide Features: new products with roller type RG series, steel rolling body replaced, to realize high rigidity and load capacity and design; The more by 45 degrees, the contact Angle design, let a roller in roller