Carrier rollers for conveyor belt systems

A carrier roller for a conveyor belt that is troughed or rolled, wherein the carrier roller is configured to be rotatable about an axis of rotation, the carrier roller comprising:

• a roll element with a rolling support region that is configured to provide rolling support for the conveyor belt, wherein the rolling support region is rotationally symmetrical with respect to the axis of rotation of the carrier roller and has a diameter that varies along an axial extent, including a maximum diameter and a minimum diameter, with the minimum diameter being at least 95% and at most 99.8% of the maximum diameter, wherein the roll element comprises:
• a first roll region disposed at a first end of the roll element, with at least a part of the first roll region having the maximum diameter,
• a second roll region adjacent to the first roll region, with at least a part of the second roll region having the minimum diameter, and
• a third roll region disposed at a second end of the roll element that is opposite the first end, with the second roll region being disposed axially between the first roll region and the third roll region, with at least a part of the third roll region having the maximum diameter.