. Electric railway journal . e of bearing friction. Some of the bearings which have been tried in servicein Europe are: 1. Svenska Kullagerfabriken, Gothenburg, Sweden. (a) Spherical ball bearings, two per housing. (b) Ball bearings with the outer ring turned cylindricaland radial bearings, one per housing. (c) Radial bearings, two per housing. (d) Spherical roller bearings, one per housing. 2. Nordiska Kullager Aktiebolaget, Gothenburg, Sweden. (a) Radial bearings, two per housing. (b) Disk bearings, two per housing. 3. Deutsche Waffenfabriks radial bearings in service onthe tramways in Copen
. Electric railway journal . e of bearing friction. Some of the bearings which have been tried in servicein Europe are: 1. Svenska Kullagerfabriken, Gothenburg, Sweden. (a) Spherical ball bearings, two per housing. (b) Ball bearings with the outer ring turned cylindricaland radial bearings, one per housing. (c) Radial bearings, two per housing. (d) Spherical roller bearings, one per housing. 2. Nordiska Kullager Aktiebolaget, Gothenburg, Sweden. (a) Radial bearings, two per housing. (b) Disk bearings, two per housing. 3. Deutsche Waffenfabriks radial bearings in service onthe tramways in Copenhagen, Denmark. 4. Jaeger-Bund-Rollenlager in service on the tramways inDresden, Germany. 5. S. R. 0. double-row radial bearings, Oerlikon, Switzer-land, in service on the tramways in Berne and Zuricn,Switzerland. 6. Delmez radial bearings, Brussels, Belgium. In America several of the bearings mentioned abovehave been tried in actual service, and in addition experi-ments have been made with several types of
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