| 摘要 |
A conditioning roll for use in an agricultural machine for conditioning crop material includes a hollow inner core and an outer shell bonded to the inner core. The inner core has a plurality of ridges extending generally lengthwise thereof. These ridges form a plurality of generally longitudinal lobes on an exterior surface of the conditioning roll. The inner core is preferably formed of extruded aluminum while the outer shell is preferably formed of a relatively thin layer of polyurethane, resulting in a conditioning roll that is lightweight.
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