New ball bearings for pure space's applications

Developed for the solar and FlachbildschirmproduktionEin a substantial component of flat screens and solar heat collectors are highly sensitive foils, which e.g. cause the polarization of the light and as filters serve. With the production of these high speed foils conveyer systems are used, which must exhibit a very calm run with very small torques, so that the foil is not damaged. At the same time the mobile parts of the conveyor plants may not deliver particles, since the foils must be highly pure, in order to offer optimal optical characteristics. In this highly specialized field of deployment of the propulsion technology work satisfactorily the DFO ball bearings, which presented NSK for the first time in the year 2005. These Low torque camps deliver very few particles to the environment and are suitable thereby outstanding for the employment in production plants, which make very high demands against the purity. The current new development was started with the goal of achieving an again smaller level at particle emissions how they are demanded in pure areas. This goal was achieved by a highly efficient thin film lubrication with the lubricant developed by NSK � Clean Grease �, which was developed with view of pure space's applications. Likewise particularly a plastic cage developed for this case of application reduces the friction of these camps. The result of the new development: Compared with the ball bearings, which one used so far in this critical application, the particle emissions by 99% and the friction were reduced by 40%. Thus a completely new purity level is reached, and the Low torque camps make an important contribution to the reproducible quality of high speed foils. The small friction creates at the same time the condition for an energy-saving enterprise of drives and transport rollers. The reduced friction has here large effects, because in only one foil production line 100 to 200 transport rollers with the new Low torque camps are used. The new ball bearings with the placing behind characters LZZ-HFD are a component of the SPACEA program of NSK, for the antifriction bearing for special site conditions e.g. belong � to camp for vacuum treatments, high temperature camps and antifriction bearings, which are particularly rustproof.

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