BoschRexroth Roller vs. Ball rail guides
WEBMay 12, 2020 · 1. Load capacity. When exposed to a load, rollers create line contact with the guide surface, which is a lot bigger than the point contact that is created when balls are exposed to a load. This gives roller rail guides higher load capacities than ball rail guides of the same size. Balls under load create point contact with the raceway, while ...