MOTOR UNIT

A motor assembly includes a first shaft rotatable about a motor axis, a second shaft that extends along the motor axis and is connected to the first shaft on one side in an axial direction of the first shaft to be movable in the axial direction, a first bearing that supports an end at another side in the axial direction of the first shaft, a second bearing that supports an end at one side in the axial direction of the first shaft, a third bearing that supports an end at another side in the axial direction of the second shaft, and a fourth bearing that supports an end at one side in the axial direction of the second shaft. An elastic portion is on a surface opposing another side in the axial direction of the outer ring of the first bearing.