Gkn Lobro Gmbh

Gkn Driveline International Gmbh

Arne Berger

Herbert Cermak

Stephan Maucher

Peter Schw&auml;rzler

Peter Schwärzler

Olf Wolf

Heiko Kossack

Robert Sandig

A longitudinal plunging unit comprises a profiled sleeve with longitudinally extending first ball grooves, and a profiled journal with longitudinally extending second ball grooves. The profiled journal engages said profiled sleeve with balls arranged in groups in pairs of first ball groove and second ball grooves. A ball cage positioned between the profiled sleeve and the profiled journal fixes the balls in their axial position relative to one another. The ball cage is displaceable relative to the profiled journal between spaced axial stops. On the profiled journal, there is arranged a stop sleeve, which can abut the profiled journal or a component connected thereto. The stop sleeve delimits the displacement path of the ball cage towards the second portion.

Longitudinal plunging unit with cage securing means

A longitudinal plunging unit () for torque transmitting purposes in a shaft assembly, comprising an outer profiled sleeve () having circumferentially distributed, inner, longitudinally extending first ball grooves () to be connected to a first attachment part, a profiled journal () positioned inside the outer profiled sleeve () and having circumferentially distributed, outer, longitudinally extending second ball grooves () to be connected to a second attachment part, groups of balls () arranged in pairs of first and second ball grooves (), and a sleeve-shaped ball cage () which is positioned in the annular space between the profiled sleeve () and the profiled journal () and which fixes the groups of balls () in their respective positions relative to one another. The profiled journal () is a hollow journal comprising a material with a substantially uniform wall thickness with a maximum deviation of &#xb1;15%.

Longitudinal plunging unit with a hollow profiled journal

A longitudinal plunging unit ( ) for torque transmitting purposes in a shaft assembly, comprising an outer profiled sleeve ( ) having circumferentially distributed, inner, longitudinally extending first ball grooves ( ) to be connected to a first attachment part, a profiled journal ( ) positioned inside the outer profiled sleeve ( ) and having circumferentially distributed, outer, longitudinally extending second ball grooves ( ) to be connected to a second attachment part, groups of balls ( ) arranged in pairs of first and second ball grooves ( ), and a sleeve-shaped ball cage ( ) which is positioned in the annular space between the profiled sleeve ( ) and the profiled journal ( ) and which fixes the groups of balls ( ) in their respective positions relative to one another. The profiled sleeve ( ) comprises a material with a substantially uniform wall thickness with a maximum deviation in wall thickness of &plusmn;15% and, in the region adjoining the first ball grooves ( ), towards the first attachment part, changes integrally into a first cylindrical projection ( ) and, in the region adjoining the first ball grooves ( ), towards the second attachment part, changes integrally into a second cylindrical projection ( ).

Longitudinal plunging unit having a material with a uniform wall thickness

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Arne Berger