One way clutch and one way clutch unit for wind power generation device

摘要

This one way clutch is disposed between an input rotation body and an output rotation body connects the input rotation body so as to allow integral rotation in a state in which the rotational speed of the input rotation body is greater than that of the output rotation body and severs the connection of the input rotation body in a state in which the rotational speed of the input rotation body falls below that of the output rotation body. A plurality of engaging elements or inside rings and outside rings are configured from a base material made by the soft nitriding of a steel material made of martensite stainless steel and the Vickers hardness of portions up to 20 m from the surfaces of contact parts is 1000 to 1500 Hv.