| 摘要 |
Tensioning device ( 1 ) for a traction mechanism drive, such as a belt or a chain drive, with a tensioning arm ( 4 ), which can pivot about a pivot axle ( 3 ) relative to a body ( 2 ) and on whose distal end there is a roller ( 5 ) supported so that it can rotate for tensioning the traction mechanism, for the purpose of which there is a torsion spring ( 6 ) acting between the pivot axle ( 3 ) of the tensioning arm ( 4 ) and the body ( 2 ). The pivot axle ( 3 ) is supported in a sliding manner by at least one radial bearing arrangement ( 7 ) and at least one axial bearing arrangement ( 8 ) separated from this radial bearing arrangement, and the axial bearing ( 8 ) is constructed as a cone friction bearing and includes a cone bearing disk ( 9 ), which is locked in rotation with the pivot axle ( 3 ) and is guided subjected to friction on the end against a cone bearing surface ( 10 ) formed in the hub section of the tensioning arm ( 4 ).
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