Nsk Corporation

Kenji Kano

Soichiro Kato

Hiroki Yamaguchi

Ryoichi Sato

Shinichi Kasuga

Nobuaki Fujimura

A linear guide apparatus has: a guide rail having rolling grooves at two side portions thereof and extended in an axial direction; and a slider having: rolling grooves opposed to the rolling grooves of the guide rail; a slider main body having a rolling element path; and an end cap having a rolling element circulating portion for communicating the two rolling grooves and the rolling element path and fixed to two end faces of the slider main body via screws, the slider relatively moving and being guided by the guide rail via rolling of a number of rolling elements inserted between the two rolling grooves, wherein through holes for the screws are provided at at least four corners of the end cap and at least a portion of a face of the end cap for attaching to the end face of the slider main body is constituted by a projected curved face.

Linear guide apparatus

Disclosed is a linear guide device in which a rate of change expressed as 'Dmax&#x2212;Dmin', becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dxdx)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dxis a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling groovesandof an element endless circulating racewayto one of curved element circulating R partsand dxis a minute movement quantity of another steel ball B when it moves from the other curved element circulating R partto the space while the former steel ball is moved by the minute movement quantity dx

Linear guide device

A linear guide device in which a rate of change expressed as &ldquo;Dmax&minus;Dmin&rdquo;, becomes extremely small where Dmax and Dmin are respectively a local maximum and a local minimum of D, expressed as (dx2&minus;dx1)/dx, which is produced when a steel ball B moves a distance corresponding to a rolling element-to-rolling element span, dx1 is a minute movement quantity of a steel ball B when it moves from one space defined between rolling element rolling grooves and of an element endless circulating raceway to one of curved element circulating R parts and dx2 is a minute movement quantity of another steel ball B when it moves from the other curved element circulating R part to the space while the former steel ball is moved by the minute movement quantity dx1.

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Gunma, Japan

Kenji Kano