This Bush, Shaft Oiles 80F-1206 is suitable for Roland RA-640 printers. This is the original Roland part (number 12159508).
 
Printer compatibility
Roland CJ-400
Roland CJ-500
Roland CJ-540
Roland CM-12
Roland CM-24
Roland CX-12
Roland CX-24
Roland FLJ-300
Roland GX-24
Roland LEC-300
Roland LEC-300a
Roland LEC-330
Roland LEC-540
Roland LEJ-640
Roland PC-50
Roland PC-60
Roland PC-600
Roland PNC-910
Roland RA-640
Roland RE-640
Roland RF-640
Roland RF-640a
Roland RS-540
Roland RS-640
Roland SC-500
Roland SC-540
Roland SC-545ex
Roland SP-300
Roland SP-300i
Roland SP-300v
Roland SP-540i
Roland SP-540v
Roland VP-300
Roland VP-300i
Roland VP-540
Roland VP-540i
Roland VS-300
Roland VS-300i
Roland VS-420
Roland VS-540
Roland VS-540i
Roland VS-640
Roland VS-640i
Roland XC-540
Roland XC-540mt
Roland XF-640
Roland VG-640
Roland VG-540
Roland EJ-640
Roland XT-640
Roland XR-640