Which roll is generally stationary on a plate roll?

Which roll is generally stationary on a plate roll?

• A. Top Roll
• B. Bottom Roll
• C. Drive Roll
• D. Idle Roll

Answer: (A)

In plate rolling, one roll serves as the fixed pressure member while the others provide motion. The top roll is mounted in a fixed position and is not part of the drive train; it only moves up and down to bite or release the plate. The bottom drive roll(s) are powered and rotate to pull the sheet through the rolls, and an idle roll simply guides or supports the plate. So the top roll remains stationary in terms of rotation, making it the correct choice.

In plate rolling, one roll serves as the fixed pressure member while the others provide motion. The top roll is mounted in a fixed position and is not part of the drive train; it only moves up and down to bite or release the plate. The bottom drive roll(s) are powered and rotate to pull the sheet through the rolls, and an idle roll simply guides or supports the plate. So the top roll remains stationary in terms of rotation, making it the correct choice.