| 摘要 |
A water-coolable furnace roller for conveying goods to be transported through a roller hearth heating furnace has a shaft supported external to the furnace and driven in rotation. The shaft has an outer contact surface. Support rings having a receiving bore, respectively, are arranged with the receiving bore on the shaft, wherein the support rings form a conveying plane. The receiving bore has an inner contact surface, and at least one of the inner and the outer contact surfaces has a shape of a polygon contour of substantially constant diameter with fitting surfaces defining an orbiform curve.
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