公开(公告)号：US20190078681A1

公开(公告)日：2019-03-14

申请号：US15699133

申请日：2017-09-08

Applicant: HIWIN TECHNOLOGIES CORP.

Inventor： WEI-CHOU LIN ,  CHENG-MING SU ,  CHENG-LUNG WANG ,  PO-JUNG HUANG

IPC: F16H57/04 ,  F16H25/22

Abstract: A lubricatable ball screw device includes a ball screw shaft, a ball nut slidably sleeved on the ball screw shaft and having oil guide holes, a linear bearing unit mounted between the ball screw shaft and the ball nut, a bearing ring rotatably sleeved on the ball nut and having an oil supplying hole, a positioning portion disposed between the bearing ring and the ball nut, and an oil passage corresponding to the oil supplying hole. The oil supplying hole, the oil passage, an oil storage space of the positioning portion and any one of the oil guide holes cooperatively form a continuous oil path.