How To: Identify different chain
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From: terrorizing southeastern norf carolina
How To: Identify different chain
(another one i stole from kawispeed 
)
ok.. theres NO info on chain available out there, so i figured i'd make it so..
i even called my boys at Parts unlimited and THEY couldn't give me the info you're about to behold.
the reaon i needed this is because i found a discrepency between sprocket sizes on a customer's bike, and all the chain said was "50".. THAT told be alot.. lol
so.. to break down the mystery-
a background..
chains are typically availably in 1 pitch type for bikes, but that isn't set in stone.
a number "50" chain has a 5/8" pitch, meaning theres 5/8 of an inch between the center of the rollers.
a number "60" chain will have 3/4" pitch
now, as far as width is concerned, thats where the 3 digit numbers come in to play.
so..
the "5" series chain (as i call it)
520- .252" roller width
525- .313" roller width
530- .375" roller width
all chain in the 5 series has a 5/8 pitch.
the "6" series
any chain in this series is the same as the 5 series, only with a 3/4" pitch.
so, 630 will have a .750 pitch and .375" roller width, or the spacing betewwn the sideplates will be this.. either/or will give you an accurate idea.
you can use a ruler to measure widths, but it better be a good, precision metal ruler. better yet, dial calipers..
so, there ya go.. not that bad.. the only difference between a 520 and a 530 chain is width... the only differeny between a 530 and 630 chain is pitch.
just remember the 5 denotes 5/8 and 6 denotes 3/4 and it's cake from there..
hopefully this helps in determining a mystery chain..
)ok.. theres NO info on chain available out there, so i figured i'd make it so..
i even called my boys at Parts unlimited and THEY couldn't give me the info you're about to behold.
the reaon i needed this is because i found a discrepency between sprocket sizes on a customer's bike, and all the chain said was "50".. THAT told be alot.. lol
so.. to break down the mystery-
a background..
chains are typically availably in 1 pitch type for bikes, but that isn't set in stone.
a number "50" chain has a 5/8" pitch, meaning theres 5/8 of an inch between the center of the rollers.
a number "60" chain will have 3/4" pitch
now, as far as width is concerned, thats where the 3 digit numbers come in to play.
so..
the "5" series chain (as i call it)
520- .252" roller width
525- .313" roller width
530- .375" roller width
all chain in the 5 series has a 5/8 pitch.
the "6" series
any chain in this series is the same as the 5 series, only with a 3/4" pitch.
so, 630 will have a .750 pitch and .375" roller width, or the spacing betewwn the sideplates will be this.. either/or will give you an accurate idea.
you can use a ruler to measure widths, but it better be a good, precision metal ruler. better yet, dial calipers..
so, there ya go.. not that bad.. the only difference between a 520 and a 530 chain is width... the only differeny between a 530 and 630 chain is pitch.
just remember the 5 denotes 5/8 and 6 denotes 3/4 and it's cake from there..
hopefully this helps in determining a mystery chain..
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