Verticaltrx
Veteran Member
- Joined
- Dec 30, 2009
- Messages
- 1,908
- Location
- VA
- Tractor
- Kubota B3200/L2501/SVL65-2/U35-4, IH 454/656, Ford NAA, Case 1845C/480E/450C LGP
Yes. With a loader, you're creating a horizontal thrust and twisting motion into the transmission tunnel causing compression and bending moments at the rear axle.
With a sub-frame mounted unit, the sub-frame is attached to the rear axle and forces pushed through the blade are transmitted as torque against the axle tubes and sheer against the mounting bolts at a much lower and straighter line to the plane of work. It's not all that much different than the loads placed on the machine when pulling from the draw bar, and we all know that's how tractors are intended to be used.
Indeed, the older Degelman units actually used the draw bar mount/pin as the rear attachment point and where the pushing force was applied. The front mount simply held the sub frame up. Dozer blades on a tractor loader, especially ones that angle/tilt are a bad idea IMO.