Abstract: A tree harvesting device for removing the limbs of a felled tree is provided that includes a unique delimbing blade assembly for cutting tree limbs flush with the trunk of a felled tree. The delimbing blade assembly includes a plurality of concave delimbing blades positioned about and defining a center axis. The blades are pivotally mounted on blade support arms. The support arms are shiftable through arcuate paths of travel for urging their respective blades into self-centered, cutting engagement with the trunk of a tree to be delimbed.