Does anyone know whether I can use an accu coder to replace the encoder on my vmc 3020?

This is the encoder on the top of the spindle motor. The part number is OE5043 but there are conflicting info online about this part number. Fadal & others (ABB, Radwell, etc.) seems to want to charge close to $1,000. I believe that I may have found the OEM that builds this encoder, but I'm not sure.

https://www.valinonline.com/products/model-260

Is there a readily available compatible encoder that I can use? Hope you can provide some guidance.