| 摘要 |
The subject of the present invention is a rotary tool ( 1 ) for surface treatment. This is equipped with a brush holder ( 3 ) which can be driven in rotation for an annular brush ( 4 ) with a brush strip ( 5 ) and bristles ( 6 ) protruding outwardly from the brush strip ( 5 ). According to the invention, coolant for the cooling thereof is supplied to the brush holder ( 3 ) and/or the annular brush ( 4 ).
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