PUMP BEARING ARRANGEMENT

摘要

The invention relates to a pump bearing arrangement suitable particularly for rapidly rotating pumps, such as turbomolecular pumps, having a pump rotor (10) connected to a rotor shaft. The rotor shaft (14) is supported in a shaft housing (20) by two bearing devices (12). Each bearing device (12) has an inner bearing ring (16) connected to the rotor shaft (14) and an outer bearing ring (22) connected to the shaft housing (20). Bearing supports (24) are disposed between the two bearing rings. According to the invention, at least one vibration element (26) is provided between the outer bearing ring (22) and the shaft housing (20), serving for damping and further having a thermal conductivity of at least 0.3 W/mK for dissipating heat.