A roller should first be understood by its job on the line. Before selecting rubber material or surface finish, it is usually more useful to confirm whether the roller is mainly used for guiding, traction, drive contact, pressure contact, spreading, squeezing, metering, transfer, corona treatment, cleaning, or tension control.
Once the function is clear, the next step is to review material contact, line speed, temperature, pressure, surface requirement, shaft details, and replacement dimensions.