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Implement Alley Discussion Forum

NH 68 knife question.

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Kelly C

07-30-2003 22:09:38

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After doing a few fields of hay. I am not real happy with how the knifes are working. I seem to get some ragged cuts and I think the baler is working harder than it should.I am not worried about the knife on the plunger I got that one good and sharp. The one on the chamber though I am not sure of though.
Is it suppose to be a sharp edge like on the plunger? I looked at my parts machine and they look the same. Here is a photo I took when I reinstalled the plunger. You can see the knife on the chamber.

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Shep VA

07-31-2003 07:44:18

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Re: NH 68 knife question. in reply to Kelly C, 07-30-2003 22:09:38

My 320 NH has two blades one on the plunger and one on the chamber, but like the other guys have said I think yours only has one blade. It is important to keep the blades sharp and the chamber side square to keep from having ragged bales. I just replaced the knives on mine last year and man what a difference.

I have enjoyed watching you fix that baler up, keep up the good work and keep us informed on the 300.

Here is a picture of my baling rig for your viewing pleasure.

My baler rig

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cole in mo

07-31-2003 05:23:28

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Re: NH 68 knife question. in reply to Kelly C, 07-30-2003 22:09:38

Kelly, I have a 69 super-liner, it may be diff. that your 68. but on my 69 the only knife is on the plunger. the plate on the side of the chamber is stamped steel about 3/8 thick, and square edged. also on the 69 you adjust the knife clearance by adjusting the plunger slide on the left side, top and bottom. book calls for 1/32 clearance. hope this helps.

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Ridr

07-31-2003 09:41:48

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Re: Re: NH 68 knife question. in reply to cole in mo, 07-31-2003 05:23:28

My 67 is a full 1/4 inch hardened steel , it is square but so square it feels sharp

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here, try this

07-31-2003 04:21:24

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Re: NH 68 knife question. in reply to Kelly C, 07-30-2003 22:09:38

should be a sqare edge on the ledger plate. Also the clearence beween the two is adjustable with shims behind the knife.

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Kelly C

07-31-2003 05:51:44

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Re: Re: NH 68 knife question. in reply to here, try this, 07-31-2003 04:21:24

Ok thanks. I will take that out and get that edge square, its pretty rounded right now.
I looked in my manual and it shows a knife there.
Thats what got me screwed up.
On my 268 it has a knife on the chamber.

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Roy in UK

07-31-2003 06:04:37

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Re: Re: Re: NH 68 knife question. in reply to Kelly C, 07-31-2003 05:51:44

It is like a guillotine, a sharp knife working against a plate that is ground 'square'.

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mohayman

10-03-2004 19:34:45

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Re: Re: Re: Re: NH 68 knife question. in reply to Roy in UK, 07-31-2003 06:04:37

i sharpen both of my balers knives atleast once a season, and also shim to .010" clearance. sometimes it is neccesary to adjust outer rail that the outer plunger roller rides on , to even out top and bottom clearance. razor sharp knives help make a superior clean rectangular bale. saves on shear bolts and helps the whole baler operate more smoothly.

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