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Where to buy US weld on sprockets?

tomstractorsandtoys

tomstractorsandtoys

Well-known Member
I have a Deere 507 rotary mower that uses a chain from the gearbox to the first blade and then belts to the other two blade spindles.My sprocket went bad a few years ago so I got a hub and weld on sprocket(uses 60H chain)the sprocket was made in china and when mowing cornstalks last fall the teeth wore off.I am blaming the problem on poor quality china metal.It is not fun to tear apart and I would like to find a source for USA weld on sprockets.Thanks for your help Tom
 
You might go the nearest bearing supply store. Make sure it comes in a box marked made in the USA. Mc Master carr sells sprockets. Ask the salesman where it's made. Stan
 
Look for a Martin Sprocket Distributor. Go to Martin Sprocket's on line catalog to figure out what you want. IIRC they do make a series with hardened teeth that wear longer if that's what you want. With the catalog you can figure out the part number for what you want so if wear is a concern they explain the options for your application, might get closer to what you want. The disclaimer, did you change the chain and booth sprockets? One worn component in a chain drive will take the whole drive down the tubes quickly. How is it lubricated? Do you have a lot of gunk building up around the chain?
 
The other sprocket was good and the chain was new.The teeth look like they just melted and wore off.We lube the chain at each use but it does get very stiff.It is a seven ft. three blade rotary mower.
 
Where are you located?I used to work at a shop that did that exact thing. They don't sell online though and they don't necessarily have the standard weld on bore, but they make them to fit.

Donovan from Wisconsin
 
I agree with Wisbaker, everything has to be right for this to work.

Has this ever worked properly? The reason I ask, chains don't like to run fast.. Sounds like a strange application for a chain drive.

If this is factory, and it worked before, a hard tooth sprocket and premium chain will be the way to go.

But, if this is a problem area, possibly a HTD timing belt drive might do better, if there is room. Would be a little pricey, but should last much longer, need less maintenance.
 
The trouble is that just about all the weld on chain sprockets are soft. I found this out on grain handling equipment. The original sprockets had harden teeth so they lasted better. The weld on a hub type would not last a year.

I like Browning sprockets the best. They are US made and are good quality. Still not harden though.
 
Mike, good point, and I've never understood how motorcycles get away with it as well as they do. It has to be something in the composition of the chain and "getting up to speed and cruising" verses the constant load something like a mower would experience. I've tried ANSI chain on motorcycles... Bad mistake! Didn't last at all! LOL

From what I've experienced with industrial chain applications, 3 things chains don't like: High speed, horizontal sprockets, and long center distances!
 
Chain drive to the first blade is correct, per the parts book.

How many times will you have to replace the sprocket with an inferior will-fit part before you'll have spent as much as you would on the correct part from John Deere?

I expect the Deere part is hardened.
 
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