Crimping tools are designed to fasten the BNC connectors directly to the wire by the application of mechanical pressure. Various devices demand different kinds of trimming of the several layers of the crimping tool. Crimping requires much less expensive crimping sleeves and tools. Crimping/stripping tools are used for electrical work, a combination tool that cuts and strips wire as well as crimps solderless connectors is recommended.
Critical speed analysis is a process of determining the natural frequencies of a rotor-bearing system and identifying the mode shapes associated with them. This analysis must be done to insure that the machine operating speed is located at a frequency safely spaced from any undamped natural frequencies. If allowed to operate at or near a natural frequency, a machine may enter an unstable and destructive vibration situation.