repairing concaves - The Combine Forum
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post #1 of 8 (permalink) Old 10-19-2019, 03:28 AM Thread Starter
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repairing concaves

Has anyone tried fixing their concaves? My large wire concaves for my CIH 8010 are in pretty tough shape.. Too many rocks or whatnot and they are starting to let the wires pull out. I was looking at them today as I was searching for a set that isn't ether sold out or down in Texas, wondering why a guy could pound everything straight then hit the bars with a grinder to sharpen them back up? Or should a guy just suck it up and buy new ones?

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post #2 of 8 (permalink) Old 10-19-2019, 06:40 AM
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It’s hard work trying to get them back in shape. I suggest get a good collection of hammers and assorted bashing smashing things. Get beer. Get meat. Get more beer. Get a bbq. Invite your mates over one night and let em at em

Or

Suck it up big boy and book some down or search for some other after market ones.

There would be dozens laying around in wrecker yards, surely. Burnt ones are fine.


Square box........
Round pizza.......
Triangle pieces....

Iam confused......


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post #3 of 8 (permalink) Old 10-19-2019, 10:33 AM
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Ive replaced wires before. But once the bars are shot I get another set.

"Never deliberately make an enemy in life, you'll make plenty by accident." Abraham Lincoln
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post #4 of 8 (permalink) Old 10-19-2019, 11:16 AM
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I repaired concaves in both our machines this year before harvest. Overall they were in good shape but had a few areas that were damaged due to stones where bars and wires were bent. I pulled / cut the wires out in the damaged areas and then cut out the bent cross bars. I cut out good cross bars from a scrap concave and used them as replacements into the concaves I was fixing. Also had lots of good wires to use from the scrap concaves. I found this worked better than trying to straighten and fix the damaged bars. Took some time cutting, grinding and welding but when I was done could hardly tell they had been repaired. Definately was worth my time to do and saved me lots of $.
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post #5 of 8 (permalink) Old 10-21-2019, 04:16 AM Thread Starter
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did some hammering and welding.. Sharped bars to somewhat square again.. But I think its just buying time.. Anyone tried Sunnybrooks in a CIH? What did you think of them.. More money than factory, but I think theres probably better system out there than what CIH offers
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post #6 of 8 (permalink) Old 10-21-2019, 08:21 AM
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Tried some used Sunny Brooks last year in Durum. Seemed to work really well. I didn’t have time to muck around with the box segments layout or try any other setups with the machine. Just threw them in and ran with it. Thrashed out the white heads really well, don’t know about any capacity increase as we were cutting all the straw for hay.

Going to run the SB’s again this season in White bread wheat. Mostly easy thrashing stuff anyway but will compare to the other identical machine running helicals

I run Gordon bars on both

Square box........
Round pizza.......
Triangle pieces....

Iam confused......


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Last edited by phantom970; 10-21-2019 at 08:27 AM.
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post #7 of 8 (permalink) Old 10-24-2019, 04:31 PM
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Originally Posted by RC Ranch View Post
Has anyone tried fixing their concaves? My large wire concaves for my CIH 8010 are in pretty tough shape.. Too many rocks or whatnot and they are starting to let the wires pull out. I was looking at them today as I was searching for a set that isn't ether sold out or down in Texas, wondering why a guy could pound everything straight then hit the bars with a grinder to sharpen them back up? Or should a guy just suck it up and buy new ones?
I have taken a set of hard thrashing concaves apart, took it to a engineering shop... They laser cut, fitted and welded me some new concaves... Looks even better then the original ones and it cost half the price as the genuine ones
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post #8 of 8 (permalink) Old 10-25-2019, 02:20 AM
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When I leased machinery link combines the concaves were never new but always looked rebuilt. Always in great condition when I received the combine. I never found out who did it for them or how it was done. Would still like to know.
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