| 摘要 |
<p>A hub assembly (30) for a seed disk (18) has a conical surface (36) that mates with a cylindrical edge (64) on a hub portion of a seed disk (18) to establish the concentricity of the two components. A pair of paddles (44) on the hub (30) are received in, and inter-fit with corresponding recesses (70) on the seed disk (18) to provide torque transmission. A retention element (54) holds the two components together.</p> |
