Ceramic rollers have exellent wear resistance and are available in various designs, both with and without bearings and shafts. Commonly made out of either aluminum oxide (Al₂O₃) or Zirconium (ZRO₂). Ceramic rollers have exellent wear resistance and are available in various designs, both with and without bearings and shafts. Commonly made out of either aluminum oxide (Al₂O₃) or Zirconium (ZRO₂).