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April, 1924 a3 jg. tite Ae Sa Sas (EE LE AEA NMAKINE REVIEW 40 Miles per Hour Over the Water on Ball Bearing Equipped Sea-Sled KIMMING over the surface of the water at speeds of 40 miles per hour and more, safety and reliability of opera- tion are insured on this 25-foot sea-sled by SKF marked ball bearings on the vital parts of the driving unit. Power is delivered from a four cylinder 125 H. P. marine motor, at 1200 to 1800 R.P.M., to twin propellers, through gear box and universal joints equipped with SKF marked ball bearings, insuring continuous and speedy transportation with comfort. Ball bearings save much of the power wasted by plain bearings in friction, heat and wear, preclude the possibility of breakdowns, and require oiling only at infrequent intervals. SKF marked ball bearings are used on marine, automotive and industrial equipment of all kinds, particularly so where dependable and nonfailing per- formance is required. The experience of our engineers is at your disposal in bring- ing the advantages of ball bearings to your equipment. tHE’ SKAVYEF BALL BEARING COMPANY Supervised by SKF INDUSTRIES, INC., 165 Broadway, New York City 1134 TARY 48 2 ALIGNING BALL BEARING Normal View Deflected View Please mention MARINE Review when writing to Advertisers 11