. Electric railway journal . y and in cost, therefore, compared to na-tional consumption and to other operating expenses, theitem of lubrication is infinitesimal and not worthy ofconsideration. It is only because of the associatedthough intangible effects of lubrication on maintenance,service and operating methods that it is of importanceand of interest to electric railway men. Seemingly lubrication resolves itself into divisionsrelating to sale, purchase, storage and filling, systemsof organization for oiling and packing and recordsand statistics to determine costs. Involved with theseitems f
. Electric railway journal . y and in cost, therefore, compared to na-tional consumption and to other operating expenses, theitem of lubrication is infinitesimal and not worthy ofconsideration. It is only because of the associatedthough intangible effects of lubrication on maintenance,service and operating methods that it is of importanceand of interest to electric railway men. Seemingly lubrication resolves itself into divisionsrelating to sale, purchase, storage and filling, systemsof organization for oiling and packing and recordsand statistics to determine costs. Involved with theseitems from the standpoint of the railway operator areitems such as reliability of service, cost of equipment,maintenance in relation to the cost of lubrication, effectof lubrication methods on rate and kind of depreciationon equipment, system inspection and labor costs andquestions associated with public sentiment and relations. The subject is very complicated and, depending on I 0 .« °, 2 FIG. 2-. 04 Viscosity in Load in lbs. per -CHARACTERISTIC CURVE FOR A RAILWAYBEARING Test made in a Thurston machine. Shaft steel in. in diam-eter, bearing, brass, in. long, in. chord of contact, 113deg. arc of contact. Smooth surface, ungrooved cylinder, clear-ance in. Loads 39, 135 and 155 pounds per square 390, 230 and seizing speed from 15 to 50. to Independent of load, speed and viscosity group-ing all points fell on the curve. the viewpoint, may be approached from many one master mechanic says, All troubles on rollingstock of a serious nature occur because of one of tworeasons, improper lubrication or the overheating ofthe motors. As a traffic man states the problem: I want to give service and keep all the rolling stockin service; if my failure to do this is caused largely bybreakdowns due to faulty lubrication, then my policy isto pla
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