Power device

The invention provides a power device in which attaching and detaching are easily performed and a liquid medium splashed by a rotating body can be efficiently filtered. The power device (1) includes:a second gear (52); a housing (4) which accommodates the second gear (52); and a storage portion (44) which is provided at a bottom of the housing (4) to store lubricating oil. A part of the second gear (52) is located in the storage portion (44). A part of a coarse strainer (70) which is attachable to and detachable from the housing (44) from outside protrudes in an area on a downstream side froman uppermost portion of the second gear (52) in a rotation direction of the second gear (52), in an inner surface of the housing (4). 本发明提供种装卸简单且能够有效地过滤由旋转体搅起的液体介质的动力装置。种动力装置(1)，其具备：第二齿轮(52)；壳体(4)，其容纳第二齿轮(52)；及储存部(44)，其设置于壳体(4)的底部并储存润滑油，第二齿轮(52)的部分位于储存部(44)，在壳体(4)的内表面中的在第二齿轮(52)的旋转方向上比第二齿轮(52)的最上部靠下游侧的区域，突出有能够从壳体(4)的外部装卸的粗滤器(70)的部分。