| 摘要 |
A servomotor actuated by a pressure medium comprises a piston rod (7) brought out at one side. The external diameter of the piston (8) is a multiple of the axial length of its circumferential surface (18). Two annular faces (19, 20) receive between each other an annular plate-like central portion (17) of the piston (8). They are so closely juxtaposed that they form a radial guide for the piston (8). Despite the larger piston diameter, this results in guiding that is free from jamming. |
