| 摘要 |
A lubricating oil change system for the roll wheel bearings of a coal pulverizer in which old lubricating oil is withdrawn from the bearings by a suction pump and new lubricating oil is introduced to the bearings by a second pump during continuous operation of the coal pulverizer. Alternatively, the lubricating oil may be withdrawn from the bearings and passed through a filter and then returned to the bearings.
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