Linear motion guide unit with rollers

Details Linear motion guide unit with rollers Linear motion guide unit with rollers

2008-05-27

2011-10-11

Pilkington, James (Department: 3656)

Bearings

Linear bearing

Recirculating

C384S045000

Reexamination Certificate

active

08033730

ABSTRACT:
A linear motion guide unit with high stiffness, high accuracy and long-lasting service life is provided in which a rolling element is a roller and a carriage of a slider is made long to allow a crowning profile to be long. The carriage has an overall length equivalent to substantially four times a width of a guide rail. The carriage is made thereon with a raceway surface that is modified near lengthwise opposite ends thereof crowning profiles each of which has a crowning length equivalent to four times as long as a diameter of the roller and also has a crowing depth equivalent to an amount of elastic deformation that occurs in the raceway surfaces and the roller when the slider undergoes a load reaching a half of a static nominal standard load.

REFERENCES:
patent: 4634295 (1987-01-01), Agari
patent: 7677804 (2010-03-01), Geka et al.
patent: 2005/0157962 (2005-07-01), Matsumoto
patent: 2006/0034552 (2006-02-01), Nakano
patent: 200046052 (2000-02-01), None
patent: 2004138193 (2004-05-01), None
patent: 2005273765 (2005-10-01), None

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