PTO Adapter Sleeve Retention

U

Urbish

501 Club
My B has a 1-1/8" spline PTO shaft and the pulley for my Woods L306U mower has a 1-3/8" spline bore bushing. I picked up a sleeve adapter to take up the gap. What is the proper way to retain the sleeve onto the PTO shaft? I was thinking that a spring roll pin 1-1/8" long should do it unless there's a better way. I know that I don't want to rely on the compression from the bushing alone.

Jim
 

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I have no idea. I will follow this post because in the 1950's dad had such an adapter for a 39 H and I cannot remember how it was held. The only time it was used was to power a baler. He later changed to a different kind of adapter which pinned to the pto and lengthened it by several inches and the baler shaft slid over this like a regular pto. Why he changed I can't remember. Vern
 
I would think a roll pin would be fine Jim. It's not like it's gonna have a lot of pulling force on it anyway. You could put a dowel pin in it for more strength if your concerned about that. The pulley should keep it from coming out, right?
 
v w":2bl097ox said:
I have no idea. I will follow this post because in the 1950's dad had such an adapter for a 39 H and I cannot remember how it was held. The only time it was used was to power a baler. He later changed to a different kind of adapter which pinned to the pto and lengthened it by several inches and the baler shaft slid over this like a regular pto. Why he changed I can't remember. Vern
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I have near zero farming experience and have never powered anything but a mower deck from a PTO, but I'll give you my Mechanical Engineer's perspective:

If you look at the adapter end-long, the metal is very thin where it steps in and out. I wouldn't use one of these for any application that required a significant amount of power. The sleeve is nice in that it doesn't change the length of the PTO (essential to keep my mower deck pulley in proper alignment with the mule drive). It also will keep the pulley running exactly on the center axis of the PTO shaft. If an extension adapter was used, the big pulley would have a little more freedom to flop around and with it further out from the back of the tractor, would greatly increase the load on the PTO shaft bearings.

For something like a baler, the extension adapter would be preferred as long as the jointed PTO shaft has enough longitudinal slide so that it won't bind. The extension adapter also can transmit more power as it doesn't have any built-in weak spots like the sleeve.

Jim
 
Shane Nelson":2by1u6c1 said:
I would think a roll pin would be fine Jim. It's not like it's gonna have a lot of pulling force on it anyway. You could put a dowel pin in it for more strength if your concerned about that. The pulley should keep it from coming out, right?
Click to expand...

Yes, the bushing will cover the hole in which the roll pin is installed so everything should be very secure.
 
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