The invention relates to a suction extraction device (11) for the collected removal of cooling water for wet drill-holes on a first building wall, comprising: a housing (13) on which a through opening (23) is provided for the passage of a hollow core drill or drill bit, the through opening (23) being delimited by an inner wall (15) of the housing (13) and a gap being defined between the inner wall (15) and an outer wall (17) of the housing (13); a suction connection (25) which is arranged on the outer wall (17) and is in connection with the gap; a first and a second sealing lip (29, 31) which are arranged on the edges of the inner and outer wall (15, 17) for sealingly retaining the housing (13) on the first building surface; and a cover (19), which connects the inner wall (15) and the outer wall (17) on the side facing away from the sealing lips (29, 31). The housing (13) comprises a first bearing wall (33) which has a lower and an upper edge and which replaces the inner wall (15) and outer wall (17) in a wall region and can bear on at least a second building face adjacent to the first building face.
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