Patent ID: 7775722

Claim:
Double-row antifriction bearing for a transmission adapted to operate at a very high number of revolutions and high temperature comprising: one-piece bearing ring forming first and second raceways; split bearing ring divided into two parts in an axial direction of the bearing and forming third and fourth raceways respectively; rolling elements located between the one-piece bearing ring and the split bearing ring; the rolling elements comprising a first row of spherical rolling elements possessing a first diameter and a second row of spherical rolling elements possessing a second diameter which is different from the diameter of the rolling elements of the first row of rolling elements; the spherical rolling elements being balls made of ceramic material; wherein the rolling elements of the first row contact only diagonally opposite sides of the first and third raceways, respectively, and the rolling elements of the second row contact only diagonally opposite sides of the second and fourth raceways, respectively, wherein a contact area of the rolling elements of the first row with the first and third raceways forms a first contact angle, and a contact area of the rolling elements of the second row with the second and fourth raceways forms a second contact angle, the contact angle of the first row of rolling elements having a size different from the size of the contact angle of the second row of rolling elements, wherein the antifriction bearing is constructed as an angular contact ball bearing; and a pitch circle of the first row of rolling elements being different from the pitch circle of the second row of rolling elements.