| 摘要 |
The motor has a shaft strand transmitting rotation movement from the motor to an impeller, and a flywheel (12) arranged between the motor and a pump housing. The flywheel has a flywheel body (13) with a number of cavities and a heavy-metal insert is arranged in the cavities. The heavy metal with specified density forms the insert and is arranged in the insert such that the body has a high-strength material. |
