Abstract: A screw-type linear actuator comprises a support structure and a screw shaft that is axially stationary with respect to the support structure but rotatably drivable. A nut is mounted on the screw shaft such that rotation of the screw shaft causes axial movement of the nut along the screw shaft. In addition, the screw shaft defines a first annular contact surface having a spherical profile with a first radius. A thrust flange is located on the screw shaft for rotation with the screw shaft, the thrust flange having a second annular contact surface with a second radius, the first annular contact surface engaging the second annular contact surface.

Abstract: A rocker arm assembly including a rocker arm, a bearing support member, and a bearing assembly. The bearing assembly is supported on the support member and engages the rocker arm. The bearing assembly includes a race defining a raceway having a stop member coupled thereto, and a plurality of rolling elements positioned on the raceway such that the movement of the rolling elements on the raceway is limited by the stop member.