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・ Wireless game adapter
・ Wireless Gas Company
・ Wireless gateway
・ Wireless Gigabit Alliance
・ Wireless grid
・ Wire fu
・ Wire gauge
・ Wire in the Blood
・ Wire Lock
・ Wire loop game
・ Wire obstacle
・ Wire of Death
・ Wire Opera House
・ Wire Pass Trailhead
・ Wire protocol
Wire race bearing
・ Wire recording
・ Wire removal
・ Wire rope
・ Wire rope spooling technology
・ Wire saw
・ Wire sculpture
・ Wire Service
・ Wire shelving
・ Wire speed
・ Wire spring relay
・ Wire Stone
・ Wire strike protection system
・ Wire stripper
・ Wire to Wire


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Wire race bearing : ウィキペディア英語版
Wire race bearing

A wire race bearing is a rolling-element bearing, where the balls or rollers run on races resembling loops of wire. Roller bearings may use just two races, but ball bearings typically use three or four races. Wire race bearings can be large yet lightweight and with small profile and good precision. Wire races have little intrinsic structure and must be adequately supported by the bearing housing. Balls, rollers or even cross rollers are used as rolling elements. Due to the design wire race bearings are commonly called '4-point-contact' bearings.〔Decker/Kabus, Maschinenelemente, Funktion, Gestaltung und Berechnung, Page 422, Hanser, 15th Issue 2000, ISBN 3-446-21525-5〕
The first wire race bearing was invented in 1934 by Erich Franke, co-founder of Franke & Heydrich KG in Aalen, Germany (nowadays Franke GmbH). As a young design engineer of Carl-Zeiss-Werke in Jena, Franke intended to design a very space-saving bearing for an optical device. The aim of his thoughts was a much closer relation between bearing and enclosing design to keep it as compact and as lightweight as possible.
== Types ==
The most common type consist of two open inner and outer rings each. Types using just three rings can be used for special applications to compensate e.g. angular offset. There are types forming an converging angle ball bearing using two rows of balls set up with two race rings each. A special type for mainly radial loads can be set up with just two race rings.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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