Flail mower belt pulley question

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TallCoolOne58
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Re: Flail mower belt pulley question

Postby TallCoolOne58 » Wed Jul 24, 2019 6:54 am

The pulley is splined, and sized correctly to the PTO shaft. Correct fastener hole size. Measured it at 3/16" and simply used a 3/16" cotter pin to secure in place on the PTO shaft.
Opportunity is missed by most people because it comes dressed in overalls and looks like work-Thomas Edison

Cubfriend
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Re: Flail mower belt pulley question

Postby Cubfriend » Wed Jul 24, 2019 7:18 am

Without something to keep it tight to the shaft I think it will wear the splines fairly fast and then you will need to replace both the pulley and the PTO shaft. A tapered fit hub will certainly keep it tight if installed correctly. The larger Woods pulley with the spokes (for a Cub) may be a good option or Browning makes pulleys with the same style tapered fit if you want the 8” pulley. (I think Woods pulley is slightly smaller.)
Frank

v w
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Re: Flail mower belt pulley question

Postby v w » Wed Jul 24, 2019 8:22 am

The pulley I am using on my mott and also use on the cub klipper is I believe called a bushed pulley. It does not tighten on the shaft but runs wherever the belt pulls it to (it may be worn to where it can not be tightened but I don't think so). I have run it this way for at least 45 years. Power shafts on farm equipment are not tight on the splines nor is there any way to make them tight. They simply slide on until the spring loaded pin snaps into a grove in the pto. I recently replaced the pto shaft because the bearing slid over the peened part of the shaft and I wanted to convert to the clip style. IH changed from peened shafts to the clip type in the early 50's. Tight may seem right but after running pto equipment in my teens I'm not going to worry about it. Vern

TallCoolOne58
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Posts: 225
Joined: Tue Sep 18, 2018 1:38 pm
Zip Code: 13126
Tractors Owned: 1957 Farmall Cub "Mule"
Location: Oswego, NY

Re: Flail mower belt pulley question

Postby TallCoolOne58 » Wed Jul 24, 2019 10:44 am

Yeh, I'm not going to lose any sleep over it. The 3/16" cotter pin worked well, just a touch of play. If ultimately I want less play, I'm leaning towards Eugene's idea of a bolt, with lock washer and nut.
Opportunity is missed by most people because it comes dressed in overalls and looks like work-Thomas Edison


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