Provided is a remotely operated actuator which can, by remote operation, change the attitude of a tool provided to the front end of the actuator body, reliably supports the actuator body, and can manually and accurately change the position and attitude of the actuator body. An actuator body (6) is mounted on an operation base (50) having any degree of freedom. The actuator body (6) is provided with: a body base-end housing (4) which is affixed to the operation base (50) an elongated spindle guide section (3) which has a base end joined to the body base-end housing (4) a front end member (2) which is attached to the front end of the spindle guide section (3) so that the attitude of the front end member (2) can be changed and a tool (1) which is provided to the front end member (2) so that the tool (1) can be rotated. The spindle guide section (3) has provided therein: a rotation shaft (22) which transmits to the tool (1) the rotation of a drive source (41) for rotating a tool and an attitude operation member (31) which advances and retracts to change the attitude of the front end member (2). The body base-end housing (4) has provided therein a drive mechanism (43) for attitude change which is driven by a drive source (42) for attitude change and advances and retracts the attitude operation member (31).La présente invention concerne un actionneur commandé à distance qui peut, par commande à distance, modifier lattitude dun outil disposé à lextrémité avant du corps dactionneur, prend en charge de façon fiable le corps dactionneur, et peut modifier manuellement et précisément la position et lattitude du corps dactionneur. Un corps dactionneur (6) est monté sur une base opérationnelle (50) ayant un degré de liberté quelconque. Le corps dactionneur (6) est pourvu de : un boîtier dextrémité de base du corps (4) qui est fixé à la base opérationnelle (50) une section de guide-tige allongée (3) qui a une extrémité de base assemblée au boîtier dextrémité de base du corps (4)
