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What chain do I have here ? |
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Macon Rounds
Orange Level Joined: 18 Feb 2010 Location: Pittsburgh Pa Points: 2143 |
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Posted: 20 Oct 2023 at 12:50pm |
Parts IPC does not indicate size.
Side plates on chain says 50 but data on 50's does not match what I have. This is stamped on chain ?orsE or MorsE Here is data on my chain. Pitch. .625 Roller dia .400 Distance between inner plates .375 Side plate thickness .095 Edited by Macon Rounds - 20 Oct 2023 at 1:24pm |
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The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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Macon Rounds
Orange Level Joined: 18 Feb 2010 Location: Pittsburgh Pa Points: 2143 |
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The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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Ky.Allis
Orange Level Joined: 31 Jan 2010 Location: Kentucky Points: 1002 |
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Usually when a chain fits like that, the chain or sprockets or both are worn out. Remove it and lay it on a flat surface next to a new chain with same no. of links and measure the length of each.
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Macon Rounds
Orange Level Joined: 18 Feb 2010 Location: Pittsburgh Pa Points: 2143 |
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Chain is far from worn out.
Picker in shop for lub and adjustments. Lots of rub blocks on this machine. So after first few runs with rusty old chain they all need adjusted. |
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The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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Tbone95
Orange Level Access Joined: 31 Aug 2012 Location: Michigan Points: 11600 |
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I don’t think your sprocket looks that bad, like you said just needs a little snugging.
Number 50 W or heavy maybe? Should be able to look up a chain table easy enough. I’m not at work or I’d have one a foot from my left hand. |
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Stan R
Orange Level Access Joined: 03 Dec 2009 Location: MA Points: 960 |
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DanielW
Bronze Level Joined: 19 Sep 2022 Location: Ontario Points: 165 |
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Your dimensions match the spec's of #50H roller chain. The 'H' stands for 'heavy'. Most manufacturers offer standard and 'heavy' roller chain - the difference being the sidebar thickness and thus tensile strength. In these cases, the number is typically followed by an 'H'.
As you provably know, the first digit represents pitch in eighths of an inch (or first two digits if a three-digit chain). So #50 = 5/8" pitch = 0.625" as you posted. #120 = 12/8" pitch, etc. If it's preceded by a '20' for a two digit chain or '2' or three digit chain, it's double pitch. Ex. 2050 roller chain = 2 X 5/8" = 1.25" pitch. Double-pitch is used on a lot of farm equipment to save on cost (half as many links/pins/rollers to make), and is sometimes used in industrial equipment on sprockets with odd numbers of teeth so it engages a different set of teeth each revolution and thus halves the wear on sprocket teeth (called a 'hunting tooth' design). Roller chain is available in standard roller or high roller. Standard roller diameter for #50 is 0.4". Roller width (between side bars) for #50 is 0.375". Only difference between yours and standard is side-bar thickness. Standard is 0.08", but heavy is 0.095" (what you have). See dimensions in this link: https://www.usarollerchain.com/50H-Heavy-Roller-Chain-p/eco-50h-10ft.htm
Edited by DanielW - 20 Oct 2023 at 3:13pm |
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DanielW
Bronze Level Joined: 19 Sep 2022 Location: Ontario Points: 165 |
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I should also add, standard roller chain (not heavy) will work on your sprockets just fine. Unless it's a really, really heavy-duty application I don't think I'd worry about trying to find heavy. We use it at work on equipment we make that's in service for 10 hours a shift, 2 shifts a day, 365 days a year. I doubt any Allis equipment is seeing that much use. Only time I buy heavy at home is when I have to weld lugs or attachments to the links.
Edited by DanielW - 20 Oct 2023 at 3:13pm |
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Macon Rounds
Orange Level Joined: 18 Feb 2010 Location: Pittsburgh Pa Points: 2143 |
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GREAT information fellas !
Figures I would look up the only chart with a misprint. This chart has #50 chain pitch is .525 Grrrrrr !!! Chain on order now. :-) Edited by Macon Rounds - 20 Oct 2023 at 4:29pm |
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The Allis "D" Series Tractors, Gravely Walk behind Tractors, Cowboy Action Shooting !!!!!!! And Checkmate
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AaronSEIA
Orange Level Joined: 11 Sep 2009 Location: Mt Pleasant, IA Points: 2551 |
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Think the .525 is a typo. Everything else I see on Google says 5/8 or .625. AaronSEIA
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TramwayGuy
Orange Level Access Joined: 19 Jan 2010 Location: Northern NY Points: 11445 |
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Divide by 80 to get the pitch. 60/80 is .75” 40/80 is .50”, etc. works for any chain ending in “0”. If it starts with a ‘20’ I.e. ‘2060’ then it’s double length.
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