Disclosed is a system to be used for transmitting ultrasonic vibration, the system comprising a sonotrode (1) designed to vibrate in a stationary wave comprising at least one node position between the distal end (1.1) and the proximal end (1.2) of the sonotrode, and a guide shaft (2) with a through opening (3). During operation the sonotrode (1) extends through the through opening (3) of the guide shaft (2) and the distal end (2.1) of the guide shaft (2) is situated on a distal side of the most distal node position (Nl) of the sonotrode (1). The sonotrode (1) and the guide shaft (2) are adapted to each other for radial clearance (RC) between the sonotrode (1) and the guide shaft (2) to be a minimum (RC1) for a sonotrode portion (1.3) comprising the most distal node position (Nl).
