| 摘要 |
The invention provides a rotational device in which one of either an inner part or an outer part is fixed, and the other one is rotated, and a main rotational shaft lies between the inner and outer parts. An angular velocity below an angular velocity based on a time required between subsequent lubrications predicted for each rotational bearing is stored in a memory disposed in a lubricant supply controller. When an angular velocity obtained by actual rotation reaches the stored angular velocity in the rotational bearing after supplying a lubricant, the controller issues a signal indicating that a lubricant should be newly supplied, and thereby a safe operation can be realized. <IMAGE> |
