| 摘要 |
A tensioning device for an endless traction mechanism for a motor is provided and includes a housing (1) that has a cylinder chamber (9) for holding hydraulic fluid, a piston (2) that is supported so that it can slide in the cylinder chamber (9) and is biased by a spring (3), and a valve (4) that is arranged on the base (10) of the housing (1) and connects the cylinder chamber (9) to an oil supply space (8) . In the base (10) of the housing (1), there is at least one groove (5) that allows a ventilation of the cylinder chamber (9).
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