Gleaner k concave bar
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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=175644
Printed Date: 10 Sep 2025 at 4:19pm
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Topic: Gleaner k concave bar
Posted By: bleeds orange
Subject: Gleaner k concave bar
Date Posted: 01 Nov 2020 at 7:43pm
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anyone know where I can buy some new or know dimensions and make my own out of channel iron? Thanks. Would f series be the same just a little longer being an f has a bigger throat? Thanks |
Replies:
Posted By: Dave (Mid-MI)
Date Posted: 01 Nov 2020 at 8:06pm
| AGCO dealer has them available. I don't remember the price, but it was reasonable. F bars are the same size material, but longer for the wider cylinder. |
Posted By: SteveM C/IL
Date Posted: 01 Nov 2020 at 8:11pm
| Channel concaves are cheap enough at AGCO. there used to be some available aftermarket. Time you fiddle with drilling holes in the right places to "make your own" you'd be ahead to buy em. |
Posted By: bleeds orange
Date Posted: 01 Nov 2020 at 8:19pm
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Ok. Thanks I was thinking of getting f concave bars from agri kits.com they are in New York and can have them in 3 days . Of course I would have to cut them down. I will call albert at zeiglers tomorrow to see how quick he can get them. Thanks. |
Posted By: MACK
Date Posted: 01 Nov 2020 at 8:26pm
| I would say Albert has them in stock. MACK |
Posted By: FREEDGUY
Date Posted: 02 Nov 2020 at 5:49pm
| Are the concave bar bolts proprietary to Agco, or is there another outlet for the square headed bolts ? Seems like the heads are "offset" to the center of the bolt?? |
Posted By: MACK
Date Posted: 02 Nov 2020 at 9:52pm
| Weld nuts to concave, then screw regular bolts in from bottom. MACK |
Posted By: JimWenigOH
Date Posted: 03 Nov 2020 at 4:31am
McMaster-Carr has square head bolts, grades 2, 5 and 8.
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FREEDGUY wrote:Posted By: JimWenigOH
Date Posted: 03 Nov 2020 at 4:34am
If a person does this, they would want to make sure not to use too long a bolt, or it would hit the cylinder bars.
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Posted By: bleeds orange
Date Posted: 03 Nov 2020 at 7:20pm
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I ordered new concaves and bolts from Albert at zieglers Thanks cory |
Posted By: FREEDGUY
Date Posted: 04 Nov 2020 at 6:23pm
Thanks for the update, can/will you verify if the square headed bolts are "off set" to the bolt? It's been several years since I messed with them, but seems like they were "odd" 
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Posted By: SteveM C/IL
Date Posted: 04 Nov 2020 at 7:09pm
| Ones I had were normal. Offset was hole in bar to make head unable to turn. |
Posted By: bleeds orange
Date Posted: 07 Nov 2020 at 5:47pm
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Squared head bolts are normal. Holes in concave bars are offset so heads don't turn when you tighten up nut. Thanks cory |
Posted By: FREEDGUY
Date Posted: 07 Nov 2020 at 8:06pm
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Thanks for the reply, I knew that there was something off center . How many bars are you putting in ??
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Posted By: DrAllis
Date Posted: 07 Nov 2020 at 8:14pm
| Holes are offset to be installed to keep the front edge from peeling away from the floor. |
Posted By: FREEDGUY
Date Posted: 07 Nov 2020 at 8:40pm
| Thanks Doc, we always thought it was for the squared heads to "seat" on . Does it matter if the holes are fore ward or rearward ? |
Posted By: MACK
Date Posted: 07 Nov 2020 at 8:50pm
| Holes forward so material don't start under concave. MACK |