When running a bar feed system connected to a lathe or in an application where supporting a long shaft in the main spindle is required, a spindle liner system should be employed. Hardinge offers spindle liner kits of various styles for all Hardinge cnc lathe products offered. Solid one piece and machinable bushing styles are available. Either style can be utilized to support the material and eliminate the typical bar vibration. It is recommended to machine the spindle liner bushings to a maximum of 1/32” over the bar diameter. By utilizing a spindle liner system bar vibration and whip will be held to a minimum thus allowing the user to operate the machine at maximum spindle speed. This also allows the user to obtain the best surface finish and tolerance holding capability possible in these applications.
Lathe Spindle liners and their usage
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