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large lock nut
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marlinpain
Posted 12/21/2023 14:50 (#10535023)
Subject: large lock nut


45 miles south spingfield il.		Rebuilding cylinder on 690b excavator and had to cut the nut off. Deere has it listed as nonavailable It is a 2inch fine thread 12 pitch. It is a very thick nut but I might have room for two jamm nuts/ TIA 2one7 47three 9one63

Edited by marlinpain 12/21/2023 15:01
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Cooperator
Posted 12/21/2023 14:57 (#10535032 - in reply to #10535023)
Subject: RE: large lock nut



Central Alberta		A good machinist should be able to make you one, probably for a fraction of the price.
Fine thread shouldn't need a lock, but two jam nuts should work.
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man of steel
Posted 12/21/2023 17:15 (#10535168 - in reply to #10535032)
Subject: RE: large lock nut



MI

This is what you may need to put it back on to the proper torque.

Hyd torque machine



Edited by man of steel 12/21/2023 17:22
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JJS
Posted 12/21/2023 15:06 (#10535039 - in reply to #10535023)
Subject: RE: large lock nut


Southern Lower Michigan		Ziegler Bolt and Nut. in Ohio Has some
Joe
https://www.zieglerbolt.com/finished-hex-nuts-2#/sFilters=33!14339;1...
Heavy Nuts
https://www.zieglerbolt.com/heavy-hex-nuts-2#/sFilters=33!14339;14!9...

Edited by JJS 12/21/2023 15:08
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mmaddox
Posted 12/21/2023 15:41 (#10535070 - in reply to #10535039)
Subject: RE: large lock nut


Keep them on hand. Try MSCDirect.
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MX255
Posted 12/21/2023 16:45 (#10535143 - in reply to #10535070)
Subject: RE: large lock nut



southwest Missouri		Have ya called. McMaster & Carr in Chicago. They have everything. Kinda pricey too
But. Price don’t seem like a issue on this
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Kelly
Posted 12/21/2023 17:53 (#10535211 - in reply to #10535023)
Subject: RE: large lock nut


NC KS		I think that is the nut on grain cart spindles.
Some dealers probably have it in stock. Loctite it or beat a castle or 2.

Edited by Kelly 12/21/2023 17:55
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hillfarmer
Posted 12/21/2023 19:48 (#10535341 - in reply to #10535023)
Subject: RE: large lock nut



the nut on the crowd cylinder of the pc450 is 14,000 foot lbs

takes a bit of a pipe to get it loose lol
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Farms With CASE
Posted 12/21/2023 20:48 (#10535414 - in reply to #10535023)
Subject: RE: large lock nut



North Liberty and South Bend, Indiana		How you gonna tighten it back up? It was probably originally at about 5000 pounds
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marktheblaster
Posted 12/21/2023 21:00 (#10535429 - in reply to #10535414)
Subject: RE: large lock nut


We always cut out a wrench from 1- 1 1/4" steel, just for such a nut. Use an excavator bucket from another machine to tighten that sucker up.
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Big Ben
Posted 12/21/2023 23:28 (#10535571 - in reply to #10535414)
Subject: RE: large lock nut


Columbia Basin, Ephrata, WA
Farms With CASE - 12/21/2023 18:48

How you gonna tighten it back up? It was probably originally at about 5000 pounds



Our local hydraulic shop has a fixture for tightening or loosening such nuts. It uses hydraulic cylinders to do the torquing and is capable of some unthinkable ft-lb numbers.





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FuRuss
Posted 12/21/2023 22:47 (#10535544 - in reply to #10535023)
Subject: RE: large lock nut


Not sure which cylinder or what serial number but a quick search shows that one nut is available



(IMG_0027 (full).png)



(IMG_0027 (full).png)



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Attachments IMG_0027 (full).png (129KB - 222 downloads)
Attachments IMG_0027 (full).png (129KB - 223 downloads)
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FuRuss
Posted 12/21/2023 22:48 (#10535545 - in reply to #10535544)
Subject: RE: large lock nut


.



(IMG_0026 (full).png)



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Attachments IMG_0026 (full).png (145KB - 184 downloads)
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Mitchco
Posted 12/22/2023 07:15 (#10535763 - in reply to #10535023)
Subject: RE: large lock nut


SW OH		I tried to rebuild a stick cylinder from a 790 years ago. 4' pipe wrench, 2 of us hanging on the end of a 16' pipe, and an old guy swinging a 20 pound sledge hammer couldn't turn it. The book says 10,400 +or- 400 foot pounds.

Mitchco
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marktheblaster
Posted 12/22/2023 10:07 (#10536034 - in reply to #10535763)
Subject: RE: large lock nut


We had 2 guys giving their all to a 1" breaker bar with a 10 ' cheater pipe. Broke the 1" breaker bar.
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Plow79
Posted 12/22/2023 12:16 (#10536205 - in reply to #10535023)
Subject: RE: large lock nut



Chilliwack BC		They’re probably not used inside cylinders but my brother says the stuff at work that requires really high torque values use these nuts.



(337B4F01-BE93-43F8-8636-C75F098C4826 (full).jpeg)



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Attachments 337B4F01-BE93-43F8-8636-C75F098C4826 (full).jpeg (133KB - 116 downloads)
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