Return on investment required for roller bearings; cost per car miles and cars, based on 5 1/2 by 10-in. bearings; labor and material maintenance costs; types of savings claimed with roller bearings; hot box frequency data for roller and friction bearings; car time saved. (see also Ry Age v 141 n 18 Oct 22 1956 p 22-6)
Economics of freight car roller bearings
Ry Locomotives Cars
Railway Locomotives and Cars ; 130 , n 8
1956
6 pages
Aufsatz (Zeitschrift)
Englisch
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