Magnetic disk memory having a disk pack hub seated at both sides of a disk pack

US4672487A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Wilhelm Brand · Hannover, DE
• Albert Dierkes · Planegg, DE
• Otto Olbrich

Key dates

• Filing date: Jan 29, 1985
• Grant date: Jun 9, 1987
• Expiry date: Jan 29, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2370/12
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

In a magnetic disk memory comprising a disk pack hub seated at both sides in ball bearings in a housing, the ball bearings are tensed in the actual direction relative to one another in order to achieve a play-free hub guidance. To this end, at least one housing wall is resiliently designed in the direction of the hub axis and flexes upon the application of a restraining force. Before integration into a completed memory unit, the spacings of the inner rings of the ball bearings, tightly seated on the hub shaft, and of the bearing locations in the housing which accept the outer rings with an interference fit, deviate slightly from one another.