Mineral oils and lubrication

✍ Scribed by Kay, W.

• Publisher: Wiley (John Wiley & Sons)
• Year: 1931
• Weight: 798 KB
• Volume: 50
• Category: Article
• ISSN: 0368-4075
• DOI: 10.1002/jctb.5000503302

✦ Synopsis

Cliciiiicnl niid physicnl tcsts, tlioiigli not ncccssnrily iiifnlliblc tcst,s :is i i i i iiidiciition of the 1ubricnt.ing propcrtics of nil oil, nre very licccssnrg for controlliug tlic quality of supplics. A fcw words will bc said nboiit tlie tcsts wliicli nrc most coirimcrcinlly iinportnnt, thcsc bciiig nil iiidicrit,ion of tlic crude, and, t1i:iiilis to tho good work of stnndnrdisntion by tlie Institute of Petrolcum Tecliiiologists, they cnii Iw nccurntclr produccd in nll lnbortitorics.

Specific Gravity, \vliicli is usiinlly tnlicn at GO" F., is n good guide to tlie sourcc of liibricnting oils. Oils froin I?cnnsylvn~iitiii crudcs hnvc grnvities up to 0.910; tliosc from nsplialtic bnsc crudcs from 0.930 up to 0-OGO, or even higher. Comincrcinlly, thc chief use of tlic spccific grnvity is for converting weight to gnllonngc, nnd it lins no direct rclntion to tho pcrformnncc of nu oil ns n Iubricnnt, cscept possiblg in special circumst,nnccs, such n s for use with siphon triminings.