| 摘要 |
PROBLEM TO BE SOLVED: To provide an extraction jig having better quality than a conventional extraction jig because a carbon-made bearing of a canned motor pump is hit and broken to take it out if it is difficult to extract the bearing from a housing in many cases, it is unsafe, and the housing is also damaged. SOLUTION: This jig for safely and smoothly extracting the bearing from the housing by fixing a circular column body having two projections attached to an inner face of the bearing and fitted into a spiral groove for liquid circulation and pulling a handle is provided to solve the above-mentioned problems. Furthermore, a method for extracting the extraction circular column body based on the principle of a screw is provided to perform the work smoothly.
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