US Patent 7555974 Finned spindle liner

A spindle liner including an axial sleeve having an axial length and an inner bore for receiving a stock piece is provided. The spindle liner further includes fins extending radially outward from the axial sleeve for supporting the axial sleeve within a spindle. Each fin extends along the axial length of the spindle liner. The spindle liner may be extruded from a high density material such as high density polypropylene, polyvinyl chloride or nylon and molybdenum disulfide. The spindle liner may further include an retaining flange attached to a distal end of the spindle liner.