| 摘要 |
An electrical hand operated tool driving device (1), such as a hammer drill, a combination hammer or a chipping hammer, has an electropneumatic striking mechanism (2), for which a cooling medium (8), for cooling the striking mechanism (2), flows through a liquid-tight cooling medium duct (10, 11, 12, 13), which is disposed in a housing (7) of the tool driving device (1).
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