Stop buffer for rail vehicles, with a cap stop buffer (1) and with a pushing stop buffer (2) displaceable relative thereto, with a first chamber (3) at least partially filled with a hydraulic medium, which decreases as the resilient suspension thruster stop buffer (2) increases and a second chamber (4) filled at least partially with a hydraulic medium, which is connected through a passage (5) which can I close by a control member (10), with the first chamber (3), characterized in that means are provided which act in the closing direction on the control member (10), which modify the closing force it acts on the control member (10) for the elastic suspension of the stop buffer function of the intake stroke and / or mass to delay and / or input speed.
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