Abstract: This specification discloses a carriage apparatus including a carriage movable relative to a fixed base bed and driven by a feed screw or the like. Means for well guiding the movement of the carriage is provided between the base bed and the carriage. A ball nut threadably fitted on the feed screw for driving the carriage is coupled to the carriage through a housing, and means for absorbing displacement of the ball nut is provided between the two. Further, to prevent chiefly the rotation of the ball nut, a bellows having high rigidity for torsion and low rigidity for the other forces is provided between the ball nut and the carriage.

Abstract: A combined bearing assembly comprises a thrust bearing receiving a thrust load with a number of rollers interposed between a planar inner member and a planar outer member, a radial bearing consisting of a radial receiving member secured to the inside diameter of a radial flange, the outer peripheral edge portion of the outer member having an outer flange formed by being axially bent, and a restraining member of L-shaped cross section fitted to the outer flange. The inside diameter dimension of the restraining portion of the restraining member is smaller than the outside diameter dimension of the inner member. The inner member and the outer member are prevented from being separated from each other.