Service and repairsItem no. 10403107, Revision 1238 ( 40 )HF spindle vibrates/oscillatesCause TroubleshootingTool unsuitableq Only use balanced tools.(Also see the "Tools for high speed cutting [} 31]" section.)q Check whether the tool is suitable for the application.q Check the tool for damage.q Replace damaged tool.Contaminationq Remove all contamination between the tool taper and shaftof the HF spindle.(Observe all points in the “Tool change [} 28]” and “Mainte-nance [} 32]” sections.)Frequency converterincorrectly setq Compare the values for the HF spindle with the set values onthe frequency converter.Machining too heavy q Reduce the machining load intensity.Mounting screws areloose q Tighten the screws securely.HF spindle damaged q Contact Nakanishi Jaeger GmbH service.If the error is not rectified after checking all of the points, contact the relevantservice partner.Ü Request the accompanying note for the repair from the service partner.Ü Check the manual of the machine.Ü Contact the manufacturer of the machine.