plastic bearing? micro seiki mb-15

I have a micro seiki turntable bought new in 1978. There is a part, I do not know the correct terminology, that has failed. It is a plastic cone shaped piece that fits over the axle that the record sits on. The piece has screw holes that have deterioriated. Any suggestions as to if I could replace with another make, are they somewhat universal or any leads as to where I could purchase a replacement? Thanks.
There is a Micro Seiki user group on Yahoo. Sign up and ask the question there. They have access to a lot of parts that are no longer made and are specific to the marque. Best of luck.