Newbie shear pin question

[greg_g]

(and, still requires the shear pin in place, no?)

No

//greg//

 

[Soundguy]

All that said, slip clutch seems best (and, still requires the shear pin in place, no?)

slip clutch attaches with a harder pin that is not designed to shear, instead, the clutch should be adjusted to slip.. etc.

soundguy

 

[Soundguy]

Nice tractor collection!:thumbsup:

thanks.. it's a work in progress..


soundguy

 

[melanelly]

Do they have REHAB for that?:laughing::laughing:

 

[JoeL4330]

We can agree that the slip clutch should be adjusted to slip before the pin (of whatever flavor) shears. But the shear pin should shear before the equipment fails more catastrophically, I would think ...which is why I said there should still be a shear pin in place; it might well be stouter than original specs but should still protect the equipment (my reasoning. But, then, you guys are the experts.)

 

[MHarryE]

May not be pertinent but back in the old days my dad was a New Holland dealer. The standard square balers had a pretty good size flywheel to smooth out the power requirement when the plunger came on stroke. They had both a shear pin and slip clutch. Getting the flywheel moving when you engage the pto could stall the tractor's engine if not for the slip clutch; however, with all the flywheel momentum, the baler would see major damage if you picked up a rock or something else hard that caught between the shear knives that cut the hay. We sold a lot of shear bolts. Some people tried grade 2 bolts when they ran out of shear bolts and ran into problems when it sheared. Grade 2 is the softest bolt and they tend to smear instead of have a clean break. Then it could be tough to punch out the broken bolt. I suspect that is why the book says to use M6 grade 8.8 metric or 1/4 inch (6.3 mm) grade 5 inch. Installing a slip clutch will protect your tiller just as well as a shear bolt because you don't have the momentum of the baler flywheel. My slipclutch on my LandPride brush cutter gets over used as I clean up the neglected land I bought. If I had to replace a shear bolt every time the slip clutch has slipped I would never have got anything done.

 

[Soundguy]

We can agree that the slip clutch should be adjusted to slip before the pin (of whatever flavor) shears. But the shear pin should shear before the equipment fails more catastrophically, I would think ...which is why I said there should still be a shear pin in place; it might well be stouter than original specs but should still protect the equipment (my reasoning. But, then, you guys are the experts.)

if you have a slip clutch, the shear pin should be un-needed.

set the clutch to protect the implement and go.

soundguy

 

[MESSMAKER]

I have sheared about 1 pin per year going back hundreds of hours. I have pin in PHD,tiller and r. mower. It's just not a big deal.

 

[Soundguy]

back when kids would rut up my property riding ATV's on it I would shear pins.. then I put up a fence. no more shearing pins.. plus i have bigger mowers now with slip clutches... no more shearing pins..e tc.


soundguy