That is quite an interesting Miller disc. Very crude, but effective looking.Wheel discs are nice to have here as well.
I learned here at an early age if it broke, I usually had the honor of repairs. Come to think of it, anytime anything got broken, it landed in my lap. Oh well, part of life I guess.
I am not sure why this disc caught my eye, but I will keep it. It will compliment one of my orchard crawlers. I might have to make myself a roller to go behind it.
Gotta stay busy here. JM

I got bored and decided to slop some paint on it.
My local vendor didn’t have any MF Red, I used IH red; it didn’t look right to me, so I went to the TSC and found some MF by Majik. Much better. Has a nice luster and brightness to it now. I’m running out of “fun” projects here. JM

Holy Crap!! Looks like it is right off the dealer's lot!!

dad used to build disc ploughs and offsets for bonel bros.
what you have is a offset. so called because you can offset the angle of the disc gangs to each other. the discs should rotate as a gang freely supported by the bearings if the discs spin on the axle 1. the axle nuts are loose 2. axle is broken 3. bearings are fucked destroying the axle and the housings. bearings are available from any good bearing shop. most good farm machinery dealers would have discs, dumbbells, and backing plates. any good engineering shop could make you a axle as they are commonly 1''1/4 to 1''1/2 square bar cut to length and threaded on the ends to take standard whitworth or SAE nuts

many of them have square axle shafts and the bearings have a square bore with a round outer if knackered and not replaced the bearing can spin in the hanger housing damaging it which then requires building up so the new bearing will fit properly the bearing are held in by cir-clips

it probably has square shaft axles these bearings are still available. and yes they should have no slop but spin freely in the bearing without it spinning in the housing.
dad has assembled many of this type of offset disc plough he worked for a machinery company. the discs should be fixed to the shaft too. all that holds them tight is the nuts on the shaft.

Hi, Juiceman.
Lookin' good.

If'n you're running short of projects up there, there are 8 tractors which were delivered here yesterday and which could use some TLC. I don't think the people who brought them in would mind if you got them all - or any of them - running.

Just my 0.02.

Nice find Gee! Glad it worked out so well. Have a great holiday Tom.

All correct about more modern disc harrows Trainzkid88. But Gee is into this all period corrert offset disc harrow with his orchard D4. Yes Gee that looks very nice.

The first discs had wood bearings. Then cast iron (and improved forms of cast iron) box bearings. So I guess it would be third generation offset discs by Allis Chalmers,IH,JD, Goble,and Towner all had heavy duty offset disc with oil bath tube type axle. A lot of guestamation on my part but it must have been in engineers minds before WW2 because no new peoducts between 1942 and 1946. They were all very much alike, a 3 inch (give or take) tube with bearing inside the tube and a shaft that extended past the tube that was had hangers to fasten to disc frame. Then in the latter 1950's all went to things you explained. In my option much easier to deal with when making repairs.

Deas: I work so slowly, its cheaper to pay me to stay away! Besides, you need something to occupy yourself with as well. Too FOGGY to drive anywhere now.
Ray54: Period correct was in my favor this time. Nobody was interested in an antiquated piece of farm machinery, their loss, my gain! I've actually tried to pull newer discs from the 70's on up, WITH wheels, and our neighbors little D-2 could barely pull any of them. This one is nice and light, but effective. My D2 pulled it like it was a D4...(thanks)
The truck show circuit is showing an interest in PERIOD correct. Friends and fellow Herders/Hoarders are wanting to show off their old truck/lowbed with a matching era CAT as the load. Sorry to say, nobody wants an IH though. LOL
I use whatever will work!
Thanks for the compliments folks. JM