公开(公告)号：US20220263377A1

公开(公告)日：2022-08-18

申请号：US17597455

申请日：2020-07-17

Applicant: MAKITA CORPORATION

Inventor： Yoshinori SASAKI ,  Masayoshi TORIHARA ,  Van Luyen TONG ,  Takahiro KAWAKAMI

IPC: H02K5/16 ,  H02K7/116 ,  B24B23/02 ,  H02K7/08 ,  H02K7/14

Abstract: An electric work machine includes: a motor having a stator disposed around a rotor; a stator-holding member, which holds the stator; one or more bearings, which rotatably support(s) the rotor; and one or more bearing-retaining members, which is (are) supported by the stator-holding member in an immovable manner in the radial direction, retain(s) the bearing(s), and is (are) made of a metal. The stator-holding member is made of a material that exhibits a water-absorption coefficient of 1.5 wt % or less at equilibrium in an ambient atmosphere at a temperature of 23° C. and a relative humidity of 50%.