A monitoring device for condition assessment of a packaging machine for producing packages of liquid food comprises a signal interface (200a) for connection to a plurality of vibration sensors (20) in the packaging machine. The monitoring device includes logic (203-205) to: receive measurement signals (SS1-SSm) from the vibration sensors (20) and obtain an event timing signal, MES, indicative of predefined work events of the packaging machine, wherein the respective work event corresponds to a mechanical action by a respective component in the packaging machine when operating to produce the packages. The monitoring device further includes logic (203-205) to: identify, by use of the MES and in the measurement signals (SS1-SSm), signal values associated with the respective component, and evaluate the signal values for condition assessment of the respective component. The provision and use of the MES thus facilitates condition assessment of individual components in a packaging machine.