. Automotive industries . h disksby inserting the disks with their axes perpendicular tothe bearing axis and then swinging them around intotheir correct position. One of the advantages claimed for the NKA bearing-is that the disks are self guiding, that is, do not requirea cage to guide them. A cage is used only because thedisks must be held apart in order to reduce the is obvious from the sectional view of the bearing thaia bearing of this type is capable of taking both radialand thrust loads, the latter, of course, to a far greaterextent than the ordinary annular ball bearing. It
. Automotive industries . h disksby inserting the disks with their axes perpendicular tothe bearing axis and then swinging them around intotheir correct position. One of the advantages claimed for the NKA bearing-is that the disks are self guiding, that is, do not requirea cage to guide them. A cage is used only because thedisks must be held apart in order to reduce the is obvious from the sectional view of the bearing thaia bearing of this type is capable of taking both radialand thrust loads, the latter, of course, to a far greaterextent than the ordinary annular ball bearing. It is claimed that this bearing known as the NKAcan withstand as high speeds as an annular ball bear-ing, and that as the disks have less mass than balls ofequal carrying capacity, the centrifugal force on thedisks is less. High carrying capacity is obtained in thisbearing by reason of the fact that the pressure on thedisks is greatest at the center of the disks and verysmall at the edges, hence there is no tendency for the. Section and sideview of theNKA disk bear-i n g, lattershowing methodof assembling. edges to become damaged. When the disk bearing isiubjected to thrust loads the disk reaction automaticallyassumes a certain angle which depends on the amountof pressure. In these disk bearings the grooves of the races andthe rolling surfaces of the disks do not have the sameradius. The radius of the disk rolling surface is slight-ly smaller, being so calculated that when the bearing isunder lull load the entire width of the rollers is in con-tad with the bearing race. The manufacturers of thisbearing are the Northern Ball Hearing Go. May IS, 1921 AUTOMOTIVE INDUSTRIES THE AUTOMOBILE 997 Germany Reveals Extent of Auto-motive Exports Statement issued by official statistical bureau tells the extent of trade forthe first eight months of 1920. Figures show that trade reached manyparts of the world. Domestic business is much hampered by taxes andoperating costs. By Benno R. Dierfeld
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear
