FLAIL Mower ID

fluggies4 · Mar 28, 2011

The model of this Mott mower is F6, made in the 1960's. The bearings are shown as the same on both sides...Mott part number 000506, OEM number is JAF87506.
The broken grease flange is Mott part number 101028, but is no longer available as far as I can see.

As for the original bearing measurements, the OD is 62mm, ID is 30mm., so maybe your cuttershaft has worn down on one side. The bearings have a steel dust shield on one side and are open on the other. The center race protrudes out on the dust shield side

LD1 · Mar 28, 2011

fluggies4 said:
The model of this Mott mower is F6, made in the 1960's. The bearings are the same on both sides...Mott part number 000506, OEM number is JAF87506.
The broken grease flange is Mott part number 101028, but is no longer available as far as I can see.

As for the original bearing measurements, the OD is 62mm, ID is 30mm., so maybe your cuttershaft has worn down. The bearing has a steel dust shield on one side and is open on the other. The center race protrudes out on the dust shield side

You pretty much hit the nail on the head. The center race DOES protrude, but it is a non issue as I will just use a spacer to take up the endplay and a standard 206 bearing as I mentioned.

BUT both sides are NOT the same. The shaft is NOT worn. Actually, what was left of the inner race on the pully side was still a pressed fit, and the ID of the pulley itself is only 28.40mm. So I dont see how if the shaft wore, that the pully got smaller:confused2:

fluggies4 · Mar 28, 2011

Hmmm, well I have the original parts book, and have two of the bearings in stock...so don't know...maybe through the years it has been altered. I don't have a pulley, so can't help with that measurement.

LD1 · Mar 28, 2011

fluggies4 said:
Hmmm, well I have the original parts book, and have two of the bearings in stock...so don't know...maybe through the years it has been altered. I don't have a pulley, so can't help with that measurement.

Just curious as to what company you work for????

And do you show a PN for the hub that the bearing presses into? and is it still avaliable?

I think what I may end up doing is going with a 6007 bearing which is 35mm x x62mm. So the OD will fit the bore, but the ID will be larger. And then I will make a press fit bushing that has the 28.4mm ID and a 35mm OD. And I can always make the grease flange.

I have a call in to flailmaster, so we will see what they say?

fluggies4 · Mar 28, 2011

The bearing cage number is 000505 and is still available either from Alamo, or other suppliers. I use Montage Enterprises, and they list it.

I work for Maritime Farm Supply in New Brunswick, Canada. We sold those old Mott mowers for many years, starting in 1963, and still supply parts.

David

LD1 · Mar 28, 2011

fluggies4 said:
The bearing cage number is 000505 and is still available either from Alamo, or other suppliers. I use Montage Enterprises, and they list it.

I work for Maritime Farm Supply in New Brunswick, Canada. We sold those old Mott mowers for many years, starting in 1963, and still supply parts.

David

I got a call in to montage as well.

That cage you are talking about, is it the same as MT 700736 in this link

MONTAGE ENTERPRISES - MOTT FLAIL MOWER PARTS & BLADES, ALAMO FLAIL MOWER PARTS & BLADES

And they dont post prices on their website. So I am waiting for a call back. Do you know about what that cage costs. Any more than about $20 and I'll just make one. I could even re-use the old one if I had to. When the bearing blew, the shaft was wobbling around inside and darn near wore the shoulder off the inside. But it didnt chew up any part of the shaft that the bearing rides on. Like I said, the inner race of the bearing was still firmly pressod on the shaft. The shoulder on the shaft BEHIND the bearing is what chewed up the shoulder in the cage.

LD1 · Mar 28, 2011

kinda funny, I just googled "alamo 000505" and the first result was an excel list of alamo part numbers and priceing.

that 000505 WAS listed as "rotor shaft bearing cage" and for a price of $138:confused2:

Google

fluggies4 · Mar 28, 2011

The current Alamo list for 000505 is $138.35. The last Montage list I have was $73.60, but that is a couple of years old.
I don't currently have a 700736 in stock...it is for #102792 bearing, which is the same OD as the 000506...possibly it might work, don't know...but there's got to be something different about it.

LD1 · Mar 28, 2011

fluggies4 said:
The current Alamo list for 000505 is $138.35. The last Montage list I have was $73.60, but that is a couple of years old.
I don't currently have a 700736 in stock...it is for #102792 bearing, which is the same OD as the 000506...possibly it might work, don't know...but there's got to be something different about it.

Well, even @ $73 a pop, I will either re-use mine or make a new one. Definatally NOT worth $73 to me. Nothing fancy about it at all. Simple to make with a lathe:thumbsup:

LD1 · Mar 28, 2011

UPDATE, I just recievend an e-mail back from flailmaster.

The mower is a Mott 72 fine cut:thumbsup: good to know.

However, they were not able to help with the bearing issues. Like fluggies4 said, she is also saying that the bearings should be the same and she believes someone tampered with the origional setup.

The replacement parts ARE the ones I was looking at, but with the 30mm bore, they wouldn't even work.

I have been around mechanics and machining long enough to know when something has been modified and to know when a bearing spins and chews a shaft up. The bearing did NOT spin. And The ONLY way for this to have been modified would have been to cut the end of the shaft off and weld on a new stub shaft, and that is not evident. Not to mention, someone at sometime MUST have sold a 28.4mm x 62mm bearing:confused2: Because the inner race and the outer race of the bearing that "blew" confirms this. As well as the pully diameter.

If someone tampered with this, they ALSO would have had to weld the bore of the pulley up, and turn it back out to match the smaller diameter, and re-cut the keyway. Unlikely. Unless the shaft origionaly had a step to it that they turned smaller, in which case, they STILL came up with the 28.4mm ID bearing:confused2:

If I wanted to be able to use the replacement hub that they sell for $100, I would have to
1. Weld up the shaft
2. Turn to 30mm
3. re-cut the keyway
4. Bore the pulley out to 30mm
5. And broach a new keyway in it

I think I am just going to make a new "cage", use a 6007 (35mm x 62mm) bearing and bush it down to 28.4mm, and make a new cap with grease fitting. It will only cost me ~$10 for the bearing and a little time in the shop machining parts:thumbsup: