Abstract: An electromagnetic braking cylinder includes a cylinder part, a piston part and an electromagnetic force generating part. The cylinder part includes first and second surfaces and an extending portion. The first and second surfaces face each other and form a first receiving space. The extending portion vertically extends from the second surface and forms a second receiving space. The piston part is received inside of the first and second receiving spaces, and moves back and forth along the extending part. The electromagnetic force generating part includes first and second electromagnetic parts respectively fixed to the cylinder part and the piston part, and moves the piston part according as an electromagnetic force is applied. One of the first and second electromagnetic parts includes a permanent magnet.