| 摘要 |
A device for centering tools, such as saw blades, rotary cutters and the like which are circular and which have bores of different sizes, on processing machines such that they can be positioned about their center axes. The device includes a mounting plate adapted to be attached to such a machine, a first and second bearings on the plate, and a third bearing mounted for movement on the plate selectively toward or away from the first and second bearings. The first, second and third bearings being engagable with the bore of the blade such that the bore is centered on the machine and the blade is rotatable about its center axis.
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