. Electric railway journal . grooves each ground to a radiusslightly larger than the radius of the balls, while theouter race is ground in the form of a section of a hol-low sphere whose center is the center of the axis ofrotation. It may readily be seen from an analysis ofthe diagram, Fig. 3, that the balls, retainer, and innerrace are free at all times to rotate at an angle withinthis spherical outer race, and will, without subjecting are obtained. The diagram clearly shows that theraces are so designed that the tangents of the balls attheir points of contact with the races are parallel. Bea
. Electric railway journal . grooves each ground to a radiusslightly larger than the radius of the balls, while theouter race is ground in the form of a section of a hol-low sphere whose center is the center of the axis ofrotation. It may readily be seen from an analysis ofthe diagram, Fig. 3, that the balls, retainer, and innerrace are free at all times to rotate at an angle withinthis spherical outer race, and will, without subjecting are obtained. The diagram clearly shows that theraces are so designed that the tangents of the balls attheir points of contact with the races are parallel. Bearing pressures due to the load are acceptedthrough the pair of oblique lines which pass throughboth contact points on the races, through the center ofthe ball, and continue in a straight line to the center ofthe spherical outer race, , the center of the bearing. The retainer, Fig. 5, for holding the balls, is made inone piece without rivets, screws or other nari-w thatmight get loose. Sheet steel is used for small bear-. Fig. 7—Belt Line Storage Battery Car of Third AvenueRailway System Equipped with Ball Bearings ings, and bored iron for larger bearings. This re-tainer construction practically eliminates bearing fric-tion. The remaining views show the application of thisbearing on an 8-ton car of the Third Avenue Railway,where they have been used for three and one-half yearswith remarkably satisfactory results. bear-ings are now used for car loads up to 24,000 lb. Ex-tensive experiments abroad, both with self-propelledand standard electric cars, have shown that these bear-
Size: 2367px × 1056px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
