. Electric railway journal . s have shown thatan increase of 10 per cent in mileage may be expectedfrom the use of ball bearings. Almost, if not quite, as important to the car main-tenance department is the saving in upkeep and inspec-tion which results from the use of ball bearings. Thesaving in maintenance charges due to the freedom fromhot journals, frequent lubricant renewals, repairs, etc., February 13, 1915] ELECTRIC RAILWAY JOURNAL 345 is held to be from 35 per cent to 70 per cent. Thissignificant saving is due to the fact that where ballbearings are properly mounted they do not require
. Electric railway journal . s have shown thatan increase of 10 per cent in mileage may be expectedfrom the use of ball bearings. Almost, if not quite, as important to the car main-tenance department is the saving in upkeep and inspec-tion which results from the use of ball bearings. Thesaving in maintenance charges due to the freedom fromhot journals, frequent lubricant renewals, repairs, etc., February 13, 1915] ELECTRIC RAILWAY JOURNAL 345 is held to be from 35 per cent to 70 per cent. Thissignificant saving is due to the fact that where ballbearings are properly mounted they do not requireadjustment or repairs and are free from the intrusionof dirt and grit. The saving in the lubricant used on the car journals isabout 85 per cent. The ball-bearing journals can besealed so that there is no leakage out of the journalbox, and it is not necessary to lubricate the bearingsmore often than once in three months. The reason for the reduced friction of ball bearingsis that they substitute rolling action for the rubbing. BALL-BEARING JOURNAL BOX FOR STANDARD 0-50 TRUCK—RADIAL LOAD ON EACH JOURNAL 6500 LB. friction of plain bearings. With bearings that are self-aligning, binding or wedging action of the balls isimpossible. Also, bearings with the double row of ballspermit the use of twice as many balls per bearing tocarry the load and consequently reduce the load carriedby each ball. Ball bearings on the driving motors increase thelife of the driving gears by maintaining the gaar center
Size: 1856px × 1347px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
