Roller bearing for storage of fast-rotating component in turbo-molecular pump, has retaining chambers for retaining roller body, where distance between adjacent retaining chambers differs from remaining distance between retaining chambers

摘要

The bearing has an internal bearing ring (10), an external bearing ring (12) and a cage (14) arranged between the bearing rings. The cage has a set of retaining chambers (16) for retaining a roller body (18). Distance (c) between adjacent retaining chambers differs from remaining distance between the retaining chambers. The chambers are formed in an oval shape in a bearing plane, where the bearing is arranged symmetric to an axis, which runs perpendicular to an axis of rotation.