Epson Roller Assembly Kit B12B813561 is a replacement roller kit for compatible WorkForce document scanners. It is designed to replace the rollers that feed and separate pages as documents pass through the scanner.
Epson lists the kit for the WorkForce DS-510, DS-510N, DS-520, DS-520N and DS-560. The DS-510 guide identifies the parts being replaced as the pickup rollers and separation roller, which help move sheets through the scanner and separate them during feeding.
For the DS-510, Epson specifies replacing the kit after 100,000 scans and resetting the scanner’s maintenance counter after fitting the new parts.