Title:
BALL SCREW UNIT
Document Type and Number:
Japanese Patent JP2005083417
Kind Code:
A
Abstract:
To provide a ball screw unit with a spacer ball means capable of stabilizing rigidity and improving a durable life.
Spacer balls 19 arranged between balls 15 are made of materials such as resin and the like having an elastic coefficient smaller than that of the balls 15. A filling ratio of the whole ball including the spacer ball 19 is set to be equal to and more than 96%.
Inventors:
WATANABE YASUMI
Application Number:
JP2003313561A
Publication Date:
March 31, 2005
Filing Date:
September 05, 2003
Export Citation:
Assignee:
NSK LTD
International Classes:
F16H25/22; (IPC1-7): F16H25/22
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu
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