Patent ID: 11873862
Assignee: HONG JIANG
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 3:
4. The planar high-density ball bearing as claimed in claim 1, wherein the number of said multiple groups of ball holes is n, suppose Li denotes the length of the major axis of the ellipse for the group i of ball holes, Li−1 denotes the length of the major axis of the ellipse for the group i−1 of the ball holes, and Li+1, denotes the length of the major axis of the ellipse for the group i+1 of ball holes, Li−Li−1 is greater than Li+1−Li, Wi denotes the length of the minor axis of the ellipse for the group i of ball holes, Wi−1 denotes the length of the minor axis of the ellipse for the group i−1 of ball holes, and Wi+1, denotes the length of the minor axis of the ellipse for the group i+1 of ball holes, Wi−Wi−1 is greater than Wi+1−Wi, where i−1, i, i+1 is counted in a direction away from the center of the ellipse, and where n≥i≥2, i is a natural number.