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  1. #1
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    1959 MF-65 sold, 2007 Jinma 554 diesel.

    Default OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Hi Guys,

    I am wanting to replace the roller chain on my old snow blower.
    The Allied King Bhuler catalogue shows the chain to be a RC-88 (old numbering series).
    I have tried to find the equivalent number for present day numbering system (eg. #50 chain, #60 chain etc), but have had no success. Maybe it is because of what I have entered into the search engine - I don't know.

    Can someone please point me into the right direction to find the proper equivalent.

    Thank you

    Jim

    The blower concerned is a SB73" Allied King 3TPH tractor rear mount blower
    - 1989 vintage.
    2007 Jinma 554 tractor, FEL, 8ft Rear Blade, 73" Snowblower, 2002 3500 Dodge Ram 4x4, 1986 F250 4x4 SC 6.9 turboed diesel.

  2. #2
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    JD LA115, WH 244, Troy Built Horse 8 HP

    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Quote Originally Posted by doxford jim View Post
    Hi Guys,

    I am wanting to replace the roller chain on my old snow blower.
    The Allied King Bhuler catalogue shows the chain to be a RC-88 (old numbering series).
    I have tried to find the equivalent number for present day numbering system (eg. #50 chain, #60 chain etc), but have had no success. Maybe it is because of what I have entered into the search engine - I don't know.

    Can someone please point me into the right direction to find the proper equivalent.

    Thank you

    Jim

    The blower concerned is a SB73" Allied King 3TPH tractor rear mount blower
    - 1989 vintage.


    ==================================================
    ==================================================
    Do not worry about thier designations period-

    Roller chain is universal so no worries there.

    Take the entire chain to a chain seller that knows what to do with chain-Kaman, TSC
    Farm N Fleet- any large equipment dealer/shop with salt spreaders.

    You may need 2 boxes of roller chain for the repair and replacement which are 10 feet of roller chain per box for most of the middle sizes.


    The side plates of the chain that are the connector have the chain size numbers stamped on them so no worries.

    The chain reseller will have roller chain sizing charts and it will be available.

    Just be sure you know you have a standard chain or an H series chain which is heavy duty use roller chain.

    If at all possible buy the roller chain with cotter keys and the installation will be much easier for you.

    You need to purchase a roller chain breaker and a roler chain tensioning tool
    tp break and assemble the chain and to avoid a lot of aggravation and &^%&*(*&^ words and time.

    REMEMBER the LOWER STRAND can not have any more than a 1/16 of an inch of slack when it is installed and tensioned as the drive chain travels in only one direction whether it has a tensioner or not and or an idler sprocket.

    You should also invest in a roller chain tension gauge to avoid headaches and to monitor the chains condition during the season while under use.

    Be sure to use Blue Loctite on the bolts securing the chain guard if it is expose and can be used to route the new chain.

    IF you are fortunate to buy cotter keyed chain be sure to mount the chain with the cotter keys outward to aid in installing it and if it needs to be shortened.

  3. #3
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Leonz

    Thanks for the info. However, I just want to be able to determine the equivalent of RC-88 roller chain without disabling my snow blower and doing the job twice.

    Up here where I live, last night the outside temperature was -23C or -8F. It is starting to get a little chilly. Like a dummy I left the work on my blower until the last minute. I live some 40+ miles out of town in a small village. I go to town once a week generally and would like to get the equivalent chain in that one trip - and still have the blower available for use if need be.

    So, if anyone out there can give me a source for roller chain equivalents of RC-88, I would very much appreciate it.

    Thx

    Jim
    2007 Jinma 554 tractor, FEL, 8ft Rear Blade, 73" Snowblower, 2002 3500 Dodge Ram 4x4, 1986 F250 4x4 SC 6.9 turboed diesel.

  4. #4
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Jim,

    I have been around roller chain for a long time and its universal; even our german mining machinery had SAE chain so no worries.

    if you can bring the entire chain with you to town you will be able to replace it if there is supplier of roller chain in the area.

    Your chain may be simply the designation "roller chain eighty eight pitchs in length" which is the number of spaces which are between the rollers for this size chain in new chain.

    Roller chain is roller chain is roller chain and sprockets too are SAE as everyone has the same size.

    As long as you have a number stamped on the side link you can find it. If the chain has an H following the numerical size it denotes heavy duty chain.

  5. #5
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Jim,
    I've never heard of the RC-88 chain size. The #40, #50, #60 have been used for many years. There are also sizes like 428, 530, etc.
    Just measure the pitch and width and you'll be able to figure out what size you need. Count the number of links to get the correct length. Don't forget a new master link.

  6. #6
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Thanks for all the comments.

    The RC-88 is the chain link description type lifted out of the makers parts manual - and yes I have seen similar numbers before - I am a retired Millwright, Marine Engineer and Stationary Engineer and am very familiar with fitting roller chains and a whole slew of associated equipment.

    I am trying to get the modern "equivalent sizes" (ie.#50, #60 etc) of the older series chain links RC-88.

    I guess this is beyond the knowledge of some of you younger "shade tree mechanics".

    Again, thanks for the comments - I guess there is room for lots of improvements on this subject.

    Cheers

    Jim
    2007 Jinma 554 tractor, FEL, 8ft Rear Blade, 73" Snowblower, 2002 3500 Dodge Ram 4x4, 1986 F250 4x4 SC 6.9 turboed diesel.

  7. #7
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Quote Originally Posted by doxford jim View Post
    Thanks for all the comments.

    The RC-88 is the chain link description type lifted out of the makers parts manual - and yes I have seen similar numbers before - I am a retired Millwright, Marine Engineer and Stationary Engineer and am very familiar with fitting roller chains and a whole slew of associated equipment.

    I am trying to get the modern "equivalent sizes" (ie.#50, #60 etc) of the older series chain links RC-88.

    I guess this is beyond the knowledge of some of you younger "shade tree mechanics".

    Again, thanks for the comments - I guess there is room for lots of improvements on this subject.

    Cheers

    Jim


    I would bet the drive sprocket on your snow blower has 19 teeth- and would be equivalent to a Tsubaki RS25 1/4 inch pitch chain.

  8. #8
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    McMaster lists the dimensions of the various chain sizes if you can get to the chain to measure it.
    McMaster-Carr

    If you were given the chain size over the phone could it be 80H (1" pitch heavy) vs. 88?
    2006 Kama 554, 92 Belarus 250AS, Bombardier Outlander Max 400.

  9. #9
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Quote Originally Posted by doxford jim View Post
    Thanks for all the comments.
    The RC-88 is the chain link description type lifted out of the makers parts manual - and yes I have seen similar numbers before - I am a retired Millwright, Marine Engineer and Stationary Engineer and am very familiar with fitting roller chains and a whole slew of associated equipment.
    I am trying to get the modern "equivalent sizes" (ie.#50, #60 etc) of the older series chain links RC-88.
    I guess this is beyond the knowledge of some of you younger "shade tree mechanics".
    Is is possible that the RC-88 is the Bhuler designation for that chain?

    If not, it shouldn't be a big deal to pull the shroud and measure the pitch of the chain with a micrometer, then see what size that translates to.

    Aaron Z
    A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects.
    Robert Heinlein, Time Enough for Love

  10. #10
    Veteran Member Hooked_on_HP's Avatar
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    Default Re: OLD ROLLER CHAIN NUMBER EQUIVALENTS

    Quote Originally Posted by doxford jim View Post
    Hi Guys,

    I am wanting to replace the roller chain on my old snow blower.
    The Allied King Bhuler catalogue shows the chain to be a RC-88 (old numbering series).
    .
    Could the RC-88 be bhulers part # having nothing to do with the size.. 1989 isn't that old and going back to the 70's chain # have been the same.
    Bill

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