Rhino HPHD

[bake321]

I bought a new post hole digger and sure am going through shear pins/bolts. The grade two that came with it were a real joke, they advertize a five year gear box warrenty, well with those bolts it would last forever. I went with grade five and even with the RPMs low and babying the dig, I,m still going through pins. The ground has a lot of rock, but is quite moist. Anyone else ran into this?
Bake

 

[Bill Barrett]

I bought a new post hole digger and sure am going through shear pins/bolts. The grade two that came with it were a real joke, they advertize a five year gear box warrenty, well with those bolts it would last forever. I went with grade five and even with the RPMs low and babying the dig, I,m still going through pins. The ground has a lot of rock, but is quite moist. Anyone else ran into this?
Bake

I have one, use it in sandy-loam-clay no problem, so I can't compare to your situation. Good news you have plenty of torque.

 

[Foodplot]

I'm running a Rhino SPHD in the limestone and clay in our part of KY. It uses custom stepped shear pins in the driveline--different than yours?. Haven't broken one in 3 years. I do cut just a few inches at a time, clear the waste, take a few more inches...

 

[pitt_md]

I bought a Fleet farm PHD that has shear pins for the safty feature. When I hit a big rock it pops them but handles anything softball size and down with no problems.

 

[bake321]

Well it went better today, I added more patience, I also found that if I didn't clear the hole as often it did a better job of bringing the rocks out of the hole. I used a Danuser before this with modifications which I think taught me some bad habits. The old girl bit the dust hooked to this new tractor. Foodplot the shear pins on this unit are 3/8ths by 3 inch bolts. Your unit is heavier than this one from what I gather from Rhinos site which dosen't say much. I'm east of Scottsville.

Bake

 

[bake321]

Bill good point "Good news you have plenty of torque". I went from a 1965 Allis Chalmers D10 1965 with 20 some pto hp to a 2007 Kubota M9540 with 84 pto hp. I better learn to hold the big girl back

Bake

 

[xlr82v2]

Yep, You've likely got nearly as much power at idle with the Kubota as you did at full throttle with the old AC. Those shear pins are on there for a reason!