Evening Republican, Volume 20, Number 221, Rensselaer, Jasper County, 14 September 1916 — Testing Ball Bearings. [ARTICLE]

Testing Ball Bearings.

An experiment of unusual Interest is the test bf the real efficiency of ball bearings ; on freight cars, as undertaken by the electric state railroad carrying ore from the great Kiruna mine in Sweden. The line operates xmder exceptionally regular and uniform conditions, and, having 50 new ore cars equipped with ball bearings, two trains of identical make-up and load —one with ball bearings and one with plalh—will 6e compared. The power consumed by each StMin will be recorded from day to day by means of watt meters.