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SE Michigan | IH 490 disk ( 25' ) needs blades. Would prefer not to buy all the blades and bearings at once ( due to a major land purchase and poor crops this year ) Would it be best to wait a year and replace all the blades and bearings or would it be OK to replace just the front or rear. I use the disc for fall tillage ( corn stalks) and ahead of a soil finisher in the spring if needed on bean ground or corn stalks that did not get tilled in the fall.
If I can replace only one set, is it better to replace the front or rear
Don't need to get flamed, don't want to go into (more) debt just yet and I could not pass up the land deal this year |
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Liberty, MO | I put new blades on the front of a Krause once, didn't change the rear, front cut deeper however it was adjusted, new blades on rear asap after plating. |
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Dearfield Co. | Well the advice would depend on which blades are smaller now. From what I see of most who set their discs they are not level and either the front or rear is way smaller than the others. Maybe that might be a good place to start as well as how wore from new they are. The next thing would be if you could tear up someones old junk one ways for blades to use
Personally I would run it unless the edges of the blades are as thick as your thumb . Maybe get them rolled to run this year unless its on the hubs now |
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swohio | I would do the front. I would also look into notched blades. Put them on my 475 and it really cuts. I have some rocks and so far no problem. I did get them from CIH. The front do most of the work. |
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| We put new blades on the front a CIH3900 this spring before doing any tillage. The front blades where worn down to 16". The front are now 20" the rear are 18.5". No current plans on changing the rear blades. The disk cut nice and level and worked good on corn stalks. This is in heavy clay ground.
Edited by ksnip1 8/29/2015 21:23
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S.E. Iowa | I did my 490 3 years ago, I think I put 20 inch notched on the front. Afterward I realized I could have went to 22's and I wish I would have. You might check into that. FWIW got mine from shoup. |
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| sj3788 - 8/29/2015 19:17
I would do the front. I would also look into notched blades. Put them on my 475 and it really cuts. I have some rocks and so far no problem. I did get them from CIH. The front do most of the work.
Ditto! Presumably the fronts are the most worn, at present? The rears seldom need changed. |
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NC KS | Usually, front wears much faster. On the Krause we have run, you can put new on the front but then the back being smaller couldn't bring back the bigger front blades threw out. If saving money is important, have your current set rolled or put rear gang on front and put new blades on back. |
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Dearfield Co. | They just look like they are running level if it takes the fronts that much faster than the rears unless you are discing pasture or other hard soils. My dad used to scold me severely when I had to much pressure on the front gangs so it would pull easier because the rears were running out of the ground almost . There might of been a 1/2 maximum difference when the blades were done . It was a krause then the same way with his old miller and then the last one was a sunflower. |
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Western OK | we would always change the fronts first. then when the backs were completely shot, buy new ones for the front again and rotate the front to the back. that's how us poor folks do it!!! |
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| a4t-1600 - 8/29/2015 22:53
They just look like they are running level if it takes the fronts that much faster than the rears unless you are discing pasture or other hard soils. My dad used to scold me severely when I had to much pressure on the front gangs so it would pull easier because the rears were running out of the ground almost . There might of been a 1/2 maximum difference when the blades were done . It was a krause then the same way with his old miller and then the last one was a sunflower.
To clarify, I was referring to primary tillage on firm soils. For finishing work disk wear front to back will be much more even.:) |
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Dearfield Co. | I try to make every pass with a disc a finishing pass LOL. |
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| What I've always believed in is putting thicker blades on the front IF you can stand to change them all at once. If I were you I'd try real hard to hold out until I could.
In OUR conditions .256 blades up front and 7 ga (.187?) in the rear gangs would wear at relatively the same rate. When the fronts were in need of changing, the backs were also. I have never heard of anybody who had ANY LUCK AT ALL getting a disc to level correctly with new blades on one end and old on the other. Didn't seem to matter what brand or model of disc. Seems to be a universal thing. |
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Advice on replacing disk blades ( front or rear )
