Joints with multiple degrees of freedom have conventionally offered two to three degrees of freedom by combining rotational joints. However, these joints have been characterised by increased size and complexity. Sliding spherical joints with multiple degrees of freedom also suffer from large frictional resistance and inner clearance. In order to resolve these problems, spherical rolling joints have been developed, which provide high precision and rigidity for zero clearance, three degrees of freedom, rolling guideways. These joints are available worldwide from Heason Technology.