| 摘要 |
The chain link conveyor assembly of an earth cutting machine is provided with means for mounting the conical cutting bits at a penetration angle on the range of 47 DEG to 53 DEG and a sideward angle in the range of 3 DEG to 12 DEG . Even bit wear is best promoted at penetration and sideward angles of 50 DEG and 71/2 DEG , respectively. |
