Analysis of main features of bearingless motors

Source: China Bearing Network Time: 2014-10-06

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Bearingless motors have the following features because they do not require a slide:
(1) There is almost no dust,
(2) can rotate at high speed,
(3) It can withstand extremely low temperature, vacuum and other environments where it is difficult to use lubricating oil.
(4) Noise.
(5) Basically no conflicts are lost. Therefore, it has always been a hot topic.
In the past, there have been precedents for separately installing magnetic bearings on the motor; however, it has followed the enlargement of the motor; it has presented the problem of whether or not the motor can work; it is required to supply the suspended power at any time. This is because the researcher uses the motor to rotate the drive. Organization; developed a method of rotating the shaft to suspend; but this method generally has less buoyancy and much lower torque than the general motor.
Professor Chiba found in the discussion; the replacement pole layout is very suitable for the bearingless motor layout. The buoyancy can reach more than 30 times of the previous bearingless motor; the torque is only about 10% lower than the general motor.

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