Cross-direction caliper variation is a critical metric for maintaining paper quality and paper machine performance. A linerboard production facility turned to PRG to grind their calender rolls in order to maintain and improve the performance metrics of their product. By controlling CD caliper across the paper sheet, paper manufacturers ensure consistent product condition, customer acceptance, and machine uptime.

PRG ground the rolls with improvements in axle-to-roll face concentricity, roundness, shape, and profile. Upon installation of precision ground rolls, CD caliper variation decreased by 3%. This modest but statistically-significant improvement added up to annual savings of more than $50,000.

Precision Roll Grinders is the world’s leader in roll and cyclindrical shaft grinding and servicing. Our capabilities include servicing rolls up to 144 inches in diameter, 600 inches in length, and 240,000 pounds in weight. Contact PRG today to be connected with your region’s Account Manager.