Abstract: A ball bearing control assembly includes a cylindrical flexible sheath. A pair of stationary races defines a first raceway. A force transmission member defines a second raceway on opposing sides. Rolling members have a center point and are in rolling contact with the first and the second raceways as the force transmission member translates axially within the sheath. A ball guide interacts with the rolling members to constrain the majority of the rolling member. In one example, the ball guide interacts with the rolling members at two locations on each axial side of the rolling members. The two locations are positioned at different distances from the second raceway. The stationary races are located between the ball guide and the flexible sheath, and the ball guide is located between the stationary races and the force transmission member. Other examples can include two ball guides.