Abstract: In a motor support having a slidable carriage on which a motor with a pulley, carrying a belt connected to a pulley on a piece of machinery, is mounted, springs engage the carriage to provide a spring loading for the carriage and a fluid pressure arrangement is provided for moving the carriage initially to tighten the belt and then to compress the springs to the point that the force exerted by the springs on the carriage will be in equilibrium with the tension in the belt between the pulleys with such state of equilibrium being maintained solely by further compression of the springs under belt induced movement of the carriage as the load on the machinery may be increased.

Abstract: A motor support has a carriage movably mounted by means of gliders, which are cross-sectionally square elongated tubes, that slidably encompass parallel elongated fixed rails on a stationary base bed with plastic or metal bearing sleeves press fitted in the end portions of the glider tubes to bearingly support them on the rails and transfer the motor load on the glider tubes to the rails in a friction free manner with a reservoir of a viscous lubricant within the center portions of the glider tubes.