| 摘要 |
A bearing arrangement for a shaft ( 1 ) in a sleeve ( 2 ) which concentrically surrounds said shaft ( 1 ) should preferably be used for a water pump, with the bearing arrangement having two cylindrical roller or needle rings ( 3 ) which roll directly on the inner periphery of the sleeve ( 2 ) and on the outer periphery of the shaft ( 1 ). Arranged between said two cylindrical roller or needle rings ( 3 ) is a ball ring which rolls in a running groove ( 13 ) on the sleeve ( 2 ) and a running groove ( 14 ) on the shaft ( 1 ). The spherical rolling bodies ( 12 ) of said ball ring ( 11 ) form, together with the running grooves ( 13 and 14 ) of the sleeve ( 2 ) and of the shaft ( 1 ), a four-point bearing.
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