壓延機のプレンベアリングをローラーベアリングに改装したる結果に就て

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The first patent for a ball bearing had been taken out as far back as the sixties, but its principle was not brought into a general application till the development of the bicycle industry in the full nineties. The bearing used in those days certainly contained balls, but they did not rotate between separate ball races as in modern constructions. Following the invention of the single row ball bearing with filling slot, now in general use, by the German professor Stribeck in 1898, and also the double row self-aligning ball bearing by the Swede Sven Wingquist in 1907 the ball bearing industry was developed very rapidly, not only in the bcycle industry but also in the textile and machine industries. In 1908 the cylindrical roller bearing was invented by the German firm Norma, now belonging to the S. K. F. concern. Together with the ball bearing, it was generally used in many places for its excellent function as efficient as the ball bearing. On the other hand the requirement for self-alignment could not adequately be met by means of such a simple type, and several attempts were made to attain this principle. In order to solve this problem S. K. F. have developed their spherical roller type and gradually improved their designs during year 1917-1919. Notwithstanding these strenuous efforts, the roller bearings have not generally been applied in rolling mills for the reason of severe shocks due to a heavy load on bearings and also of the obstruction of hard scales and objectionable dusts entering into the bearings proper. But in about the year 1925, as the results of researches scientifically and perseveringly made, S. K. F. succeeded in placing these bearings in rolling mills from which we can understand that the successful introduction of roller bearings into rolling mill works is of quite a recent event. At present time three types of roller bearings are used in rolling mills : - 1. Fischer cylindrical roller bearing, Germany. 2. Timken tapered 〃〃 America. 3. S. K. F. spherical 〃〃 Sweden. The Plate and Sheet Mills, the Kawasaki Dockyard and Co., Kobe, embarked to reconstruct roller neck bearings of four continuous stands of the sheet bar mill, and commencing from Nov. 1931, the complete alteration was successfull finished in Jan. 1933. The power saving trial was prosecuted lasting at least for one week each time after bearings of every one stand were reconstructed. Four trials in all have been carried out satisfactorily in order to find out how much the power could be saved and also to confirm whether the new application of roller bearings would meet our expectation. The results of trials are described in this paper which we believe would be a good reference to the rolling mill industries.
社団法人日本鉄鋼協会の論文
1933-07-25

壓延機のプレンベアリングをローラーベアリングに改装したる結果に就て

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