CPC F16C 33/743 (2013.01) [F04D 29/0462 (2013.01); F04D 29/061 (2013.01); F04D 29/108 (2013.01); F16C 33/104 (2013.01); F16C 2360/44 (2013.01)] | 20 Claims |
1. A shaft bearing having a sealing arrangement for radially mounting and sealing a shaft inside a housing of a coolant pump between a coolant side and an air side, comprising:
a rotatory bearing portion for rotatably mounting the shaft;
a primary radial seal for sealing a shaft circumference to the coolant side;
a secondary radial seal for sealing a shaft circumference to the air side; and
an oil chamber that takes in a volume of a lubricating oil; wherein
a grease chamber surrounding a shaft circumference and receiving a volume of a lubricating grease having a higher viscosity than the lubricating oil and the coolant is arranged between the primary radial seal and the rotatory bearing portion; wherein
a volume compensator including a compressible material is provided for compensating a temperature-dependent volume variation and is arranged such that the volume compensator interacts with the volume of the lubricating oil and the volume of the lubricating grease.
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