Ball bearing

US9360043B2 · kind B2 · utility

Assignee

• IMO HOLDING GMBH · DE

Inventor

• Hubertus Frank · Annaberg-Buchholz, DE

Key dates

• Filing date: Dec 3, 2010
• Grant date: Jun 7, 2016
• Expiry date: Dec 3, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2240/76
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A ball bearing having first and second races and, disposed in a gap between the two races, a row of balls of radius RK that roll along facing tracks of the two races, wherein centers of the balls move on a circular path surrounded by a torus circumscribing all the balls of the row and having the toroidal radius RK, a toroidal angle coordinate φ, and a poloidal angle coordinate θ, wherein each track has with each ball two nearly punctiform contact areas P1, P2; P3 P4 at respective contact angles θP1, θP2; θP3 and θP4, wherein the cross section of the track in the region of the contact points P1 . . . P4 has a finite transverse radius of curvature RL1 . . . RL4, with RLv>RK, and wherein in the vicinity of a contact point P1 . . . P4 the transverse radius of curvature (RL) is a continuous and differentiable function of the poloidal angle coordinate θ: RL=RL(θ) that increases outward from the respective contact point P1 . . . P4 in both poloidal directions: RL(θ)≧RL(θPv).