Abstract: The automatic friction wheel torque converter enables a bearing-free adjustable force transmission, with different loads and speeds, for example in electric vehicles or machines. Said converter is simple, economical and has a high efficiency. It comprises a pair of friction wheels of which one (8) has a conical annular part and the other one a planar disk (11), a device (5) enabling to move one of the wheels with respect to the other one. Said device is articulated about an axis (16) arranged parallel to the disk and to the cone generatrix of the annular part where said annular part engages said disk. The planar disk may be replaced by a driven cone, in which case the axis (16) is parallel to a generatrix of said driven cone. Elastic members acting on an oscillating frame (2) enable a large number of applications.