Torsional vibration damper

The invention relates to a torsional vibration damper (1) having an input part (10) and an output part (2) which can be rotated to a limited extent relative to one another about an axis of rotation (A) against the action of spring elements (30, 40). The torsional vibration damper (1) has an oil drain opening (130) which is formed axially with respect to the rotational axis (A) and via which oil can be drawn away from the torsional vibration damper (1) during operation. As a result, a defined flow of oil, in particular in the region of the spring elements (30, 40), can be achieved, and oil can be prevented from accumulating in the torsional vibration damper (1) and undesired forces that cause damage to the torsional vibration damper (1) can be prevented from acting on components of the torsional vibration damper (1). 本发明涉及一种扭振减振器(1)，其具有输入部件(10)和输出部件(2)，所述输入部件和所述输出部件可以抵抗弹簧元件(30、40)的作用围绕旋转轴线(A)相对于彼此受限地扭转。扭振减振器(1)具有排油孔(130)，所述排油孔关于旋转轴线(A)轴向地构成，并且经由所述排油孔可以在运行中从扭振减振器(1)引走油。由此，可以实现油的限定的流量，尤其在弹簧元件(30，40)的区域中，并且可以防止油积