Power machine including a bearing arrangement between the stationary and rotating parts

摘要

A power machine comprises two pistons, which are arranged in a common cylinder bore and work synchronously against each other, and means for transmission of power between linear motion from the pistons to rotary motion. The means comprises a rotating first 101 and a stationary second disc 102 and an outgoing shaft 104 connected to the rotating disc. The stationary disc is permanently joined to or forms part of a housing 103 which encloses the rotating disc. Bearing means between the discs is arranged in connection with the outgoing shaft at one side of the cylinder bore. The bearing means may comprise two separate bearings. The bearings may be deep groove ball bearings 105, 106. The outgoing shaft and/or its connecting means to the rotating disc may be hollow and one bearing may be mounted outside the shaft and one bearing may be mounted inside the shaft.