Rotary Cutter Help me find the right slip clutch

[MMalabama]

Making a mountain out of a mole hill here.

I'll give you 3 simple options,

1. It the slip clutch you buy don't have the 1/4" hole to retain it to the bushhog shaft.....Drill one. Its not under any extreme load. The splines do that. The bolt is to just keep it on the shaft.

2. IF the clutch you buy dont have the bolt but has the pin designed to be in a groove in the splines (like most tractor side PTO shafts), then just grind the little groove in ONE of the splines on the bushhog.

3. Put the clutch on the tractor side PTO shaft.

Ok so I do feel a bit stupid now. After closer inspection, I did find where one of the splines on the BH shaft does indeed have a groove in it. It was filled with grease and I just thought that it was all or none, and apparently this older model 305 was made with only one spline having the machined groove. That will solve all my problems. I already ordered a new shaft with Slip Clutch a couple of days ago. It is possible that the shear pin works better/less hassle and if I decide I don't like the slip clutch then ill probably try the shear pin for future applications.

 

[Fallon]

I have this type setup on my JD baler. First off it's under a protective cover. Second I remove the bolt and slide it around every few years to apply some grease on the flange. Last I don't tighten the bolt, using a self locking nut and leaving it slightly loose.

I do the same with my regular "hole in the shaft" shear bolt installations allowing for a little slop which allows a little vibration which keeps the interfaces worn slick, ready to shear when needed.

Mine has a grease zero for the sheer pin interface & race. I pump a shot of grease in whenever I lube the rest of the PTO shaft. I'd worry about doing better maintenance on it if I didn't also have the belts to protect the power train.

 

[LD1]

Ok so I do feel a bit stupid now. After closer inspection, I did find where one of the splines on the BH shaft does indeed have a groove in it. It was filled with grease and I just thought that it was all or none, and apparently this older model 305 was made with only one spline having the machined groove. That will solve all my problems. I already ordered a new shaft with Slip Clutch a couple of days ago. It is possible that the shear pin works better/less hassle and if I decide I don't like the slip clutch then ill probably try the shear pin for future applications.

You have a splined shaft. Hard to make a shear pin work with that.

 

[MMalabama]

You have a splined shaft. Hard to make a shear pin work with that.

LD1, I was just saying if I decided I didn't like the slip clutch shaft, maybe when I purchase another shaft in the future for an implement I will get a shear pin PTO shaft without a slip clutch