Flail Mower Can't keep the cutter shaft bolt tight on my flail mower!

[Bunnyblaster]

I'm nearly at my wits end. I love the way my old Mott flail cuts, but about every 10 min or so I have to stop and tighten the bolt that holds the cuttershaft tight to the bearing on the right side.

I ordered a new bolt, lock washer, and larger lock washer. Supposedly there was a bushing that goes between the larger washer and the end of the shaft, but the don't make it any more. I replaced it with a large bolt of similar size that just fills the gap between the end of the cuttershaft and the outside edge of the bearing.

I've tried loc-tite. Thought about finding a way to pin it to the inner ring of the bearing. I don't know. Anyone ever have a similar problem?

 

[CharlieS]

Can you use a longer bolt and double nut? By locking one nut against another will prevent loosening.

 

[Bunnyblaster]

I'll have to post a pic of it. The bolt doesn't have a nut on it. Its a hex head that threads into the end of the cuttershaft and holds that side of the shaft tight against the bearing.

 

[leonz]

Bunnyblaster,

Please post some pictures of your flail mower when possible.

What is the width size flailmower do you have?


I will assume what you are missing is a locking collar
for the end bearing by the description you have offered.

Many good hardware stores have locking collars with
thier bolt bins.

A locking collar can be obtained from other sources such
as w.w. Grainger or McmasterCarr or a good machine shop
if needed.


you can use some blue Loctite with the new locking collar to hold it in place
after you drill a dimple in the rotor shaft for the set screw.

_________________________________________________________________
Once you go flail you never go back:thumbsup::licking::drool:

 

[Bunnyblaster]

I'll try and take some pics tonight. Its a 6 foot model. Found it at a junk yard, and put new blades on it earlier this year. It runs good except for this issue.