Title:
BALL SCREW DEVICE
Document Type and Number:
Japanese Patent JP2004108477
Kind Code:
A
Abstract:
To provide a ball screw device for sufficiently supplying oil into a nut when it is used under oil stirring lubrication.
In this ball screw device comprising a screw shaft 3 having a spiral thread groove 2 on its outer peripheral face, the nut 6 having a thread groove 4 corresponding to the thread groove 2, on its inner peripheral face and engaged with the screw shaft 3, and a number of rolling elements 5 rotatably fitted in a load track formed between both thread grooves 2, 4, and being used in the oil stirring lubrication, the nut 6 is provided with an oil introduction hole 14 communicated with the inside of the nut 6.
Inventors:
HASHIMOTO KOJI
Application Number:
JP2002271409A
Publication Date:
April 08, 2004
Filing Date:
September 18, 2002
Export Citation:
Assignee:
NSK LTD
International Classes:
F16H25/24; (IPC1-7): F16H25/24
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu
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