bearing and axel bolt sizes

[Raskin]

So..a 35mmOD x15mm ID x 11mm ct200u wheel bearing it takes a 14mm axel bolt...when you are looking to buy a rim w a stated 14mm bearing you need a 13mm axel bolt or what..I'm confused..is there some inconsistant info on these things?

 

[EVOL Tweety Bird]

From what I've read, and I even went out and checked mine, it's got 14mm axles. Looks like the MB200 even uses the same.
Where did you find about the smaller ones?

 

[Doc1976]

So..a 35mmOD x15mm ID x 11mm ct200u wheel bearing it takes a 14mm axle bolt...when you are looking to buy a rim w a stated 14mm bearing you need a 13mm axel bolt or what..I'm confused..is there some inconsistent info on these things?

So I'm curious about where you got the dimensions for the wheel bearings, actual measurements or a website? I don't have any experience with Chinese crap but if I use a 1/2" bearing, a 1/2 axle will fit. Now if I take a mic to either, neither will actually measure .500" that's because two parts can't share the exact same space(size) there will be a certain amount of clearance.

There is also the question of nominal measurements vs. actual. a bearing measuring 15mm ID may not actually be 15mm exact. and an axle measuring 14mm may not be either. Again, where did you get the measurements you are quoting?

 

[Charles S]

Info I found is that the CT200U axle diameter is 14mm and the bearing bore/ID is 15mm; guess it's just a sloppy fit; not ideal, but I guess it works okay; 1mm isn't a huge difference, actually (1mm = 0.03937"; greater than 1/32", less than 3/64"). You could make some shims from a feeler gauge blade if you wanted to (somewhere around .019" should be tight; might need to go thinner) but it would be difficult keeping them in place during assembly. FYI: you can get 10 bearings for $20 on Amazon; 6202Z (shielded) or 6202-2RS (sealed).

https://www.amazon.com/Bearing-15x35x11-Single-Shielded-Bearings/dp/B002BBGBUE

https://www.amazon.com/Bearing-6202...rd_wg=ChJC2&psc=1&refRID=8N9P94GQ88NJNANQ16XW

A caliper comes in quite handy for checking dimensions of bearings, bushings, etc. I have this one; it works well.

https://www.amazon.com/gp/product/B001AQEZ2W/ref=oh_aui_detailpage_o09_s01?ie=UTF8&psc=1

 

[Raskin]

So I'm curious about where you got the dimensions for the wheel bearings, actual measurements or a website? I don't have any experience with Chinese crap but if I use a 1/2" bearing, a 1/2 axle will fit. Now if I take a mic to either, neither will actually measure .500" that's because two parts can't share the exact same space(size) there will be a certain amount of clearance.

There is also the question of nominal measurements vs. actual. a bearing measuring 15mm ID may not actually be 15mm exact. and an axle measuring 14mm may not be either. Again, where did you get the measurements you are quoting?

I like this site coz they regularly give measurements and bikes they fit in description if you scroll down. 6202-2RS (6202RS) Sealed Scooter Wheel Bearings (Set of 2) - Coleman CT200U Trail Mini Bike Parts - Coleman PowerSports Mini Bikes - All Mini Bike Brands - Mini Bike Parts & Mini Bike Accessories : Monster Scooter Parts

 

[Charles S]

I like this site coz they regularly give measurements and bikes they fit in description if you scroll down. 6202-2RS (6202RS) Sealed Scooter Wheel Bearings (Set of 2) - Coleman CT200U Trail Mini Bike Parts - Coleman PowerSports Mini Bikes - All Mini Bike Brands - Mini Bike Parts & Mini Bike Accessories : Monster Scooter Parts

I got the bearing number from the Coleman site and Googled the number; simple. Here are a couple of cheaper deals.

https://www.amazon.com/URBEST-10Pac...&qid=1515634503&sr=8-2&keywords=Bearing+6202Z

https://www.amazon.com/6202-Rubber-...=1515634587&sr=8-18&keywords=Bearing+6202-2RS

 

[Raskin]

Thanks..i don't really buy from the monsterscooter and they don't have alot of parts.i just use them for cross reference i ordered these because quality is better.. https://www.ebay.com/itm/6202-2RS-6...590643?hash=item5ad363d073:g:GlYAAOSwRLZT62UF

 

[Charles S]

Thanks..i don't really buy from the monsterscooter and they don't have alot of parts.i just use them for cross reference i ordered these because quality is better.. https://www.ebay.com/itm/6202-2RS-6...590643?hash=item5ad363d073:g:GlYAAOSwRLZT62UF

:thumbsup:

 

[Doc1976]

Info I found is that the CT200U axle diameter is 14mm and the bearing bore/ID is 15mm; guess it's just a sloppy fit; not ideal, but I guess it works okay; 1mm isn't a huge difference, actually (1mm = 0.03937"; greater than 1/32", less than 3/64").

Wow! I don't know if I would accept a 1mm off fit. Maybe on an old vintage 50 year bike, but not on something new. Although I guess we aren't talking about full on motorcycles and high speeds. I used to take a mic to the steel yard or wherever and measure the actual diameters of round stock until I found the closest fit. I usually get within about .010. Although now I found a supplier that regularly has turned, ground and polished rod in the remnants area that I get a real good deal on. :thumbsup:

 

[Charles S]

Wow! I don't know if I would accept a 1mm off fit. Maybe on an old vintage 50 year bike, but not on something new. Although I guess we aren't talking about full on motorcycles and high speeds. I used to take a mic to the steel yard or wherever and measure the actual diameters of round stock until I found the closest fit. I usually get within about .010. Although now I found a supplier that regularly has turned, ground and polished rod in the remnants area that I get a real good deal on. :thumbsup:

Yeah, I have trouble believing it, myself. I have little minibike experience, but I have decades of street bike riding in my past and have always striven for perfection when assembling or tuning anything. Even though I said 1mm isn't a huge difference, it is in my mind; I think I was trying to rationalize it. The bearings won't be flopping around with the axle tightened, but a sloppy fit is just wrong. I pulled out my digital caliper just to visualize what 1mm is; it's quite a bit in this context. I looked at 0.5mm, what the gap would be all the way around if you could center the axle in the bearing perfectly (never happen); still a lot of light coming through the caliper. Maybe the info is bad. I don't have a CT200U, but I have a CT100U. Out of curiosity, I checked the info on it; 12mm axle, 12mm bearing ID. Obviously, both are not going to be a true 12mm, as you mentioned in an earlier post. Guess we'll just have to wait until Raskin replaces his bearings and lets us know what the deal is.