The present subject matter provides a linear compressor. The linear compressor includes a coupling having a ball seat that is press-fit on a post of a piston. A shaft defines a chamber at an end of the shaft. A pin is press-fit to the shaft at the chamber of the shaft. A ball is positioned on the seating surface of the ball seat. The pin extends through the ball. A ball shoe is positioned opposite the ball seat about the ball. The ball shoe defines a seating surface. The ball is positioned on the seating surface of the ball shoe. A spring urges the ball shoe against the ball.