A rolling guide with zero clearance, high rigidity and high precision. Hephaist spherical rolling joints have been developed to resolve a variety of problems associated with joints with multiple degrees of freedom. These joints have conventionally obtained 2-3 degrees of freedom by combining rotational joints. However, they have been characterised by upsizing due to their complex structure. Sliding spherical joints have also been available. However, they have had large frictional resistance and inner clearance. The movable part has less frictional resistance due to its rolling joint structure under preload, achieving high precision with zero clearance. Higher rigidity and downsizing have also been obtained. Spherical Rolling Joints Datasheet