KymcoForum.com
Scooters - 50cc => zx50 => Topic started by: Jarek on August 05, 2010, 03:49:32 PM
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Any idea where i can purchase new crankshaft bearings?
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.. "www.stadiumyamaha.com" ...
..best place for OEM kymco parts..
..mention this forum if you order from them...
peace
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what year zx do you have?? are you SURE the crank bearring??...01,02 were/can be bad but the 03,04 has one of the stongest, bearrings in..those usually are good to go....
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i have a 2002 and the crank jiggles on the variator side
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Thats a sure sign. If you have the bearing out. Take it to a local bearing shop they will usually have what you need in stock at near 1/2 the price and twice the quality..
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thanks il look into that
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Hey art, given that 2 strokes are in your blood, I will direct this question to you, given that this thread was about crank bearings, I think seals ought to be included. When replacing the crank seals, are they standard seals or they special seals? I am considering splitting the case and working the inlet.
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There is a good chance that the seals can fit from a bearing shop,but the oem's are cheap from the factory,best not to take a chance. Some have built in seals some don't. If built in should be fine. If seperated I would get the oem's. Ha! I'm almost awake! Point is it matters what kind of bearing it is.
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Thanks art, I was just wondering about the seal construction, wether it is just an oil seal or different. If I go oem, I will have to order in advance, if I can get them from the bearing shop, I can take one down there and get one in a couple days. Other option is ebay, far quicker than oem, plus, have my eye on a stroker crank, just need the readies.
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Yep you need it in your hands to make the call the first time around. I havn't been in the lower half of one of these scoots yet. Once you know give us a post :D
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Will do. I plan on taking some pics as a reference. Should be fun.
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The crank seals are separate, the bearing bloke had both in stock, is chasing the bearings. On the stock bearings the outer race is a lot thicker than standard, would there be a reason for this?
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I would think it was for clearence issues,wouldn't want the inner rubbing on anything once seated.
Did you save any cash?
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G'day art, I was actually refering to the thickness from the inside diameter to the outside diameter.
Here's a pic.
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Now I see what them little buggers look like. 8)
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Ah! I see :D I think its a matter of fitting your crank. The ball bearings are engineered for the lode and the race is tailered to fit your case and shaft. That outer does look a bit beefy but the inner looks to be standard.
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Yeah, tried two bearing places, no good. Tried thd local bike shop, screw up their faces at chinese, even though they have a ZX50 in for sale. I have spoken to GC Motorcycles in Adelaide and he thinks the bearings are about $30 each and the seals $15. Crank, about $300. I will go the ebay route.
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Ya thats to bad. I've had alot of luck with some of the old honda stuff,but there are those oem only out there. That might be why yours looks a little odd :D .Maybe check the dio spec's should be cheaper if they fit.
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Nope, local shop dont want to know about it.
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Send Mrs Sid in for parts next time maybe? ;D
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Delayed replies, my forte. I won't bother sending mrs. Sid in, I am losing faith in them more and more, each time I go in there.
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Yeah, I understand, sid. It's a shame, though. I hate it when it looks like what you need is right there so close and it's not accessible.
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that is just the problem with these scoots Rianna, nothing is close, everything is a half a world away. With the fuel tap I got lucky, so far everything else is a long wait. The carb insulator took ten months and 3 dealers to get. We only have one bike shop in town, they sell Yamaha and KTM and apparently they are trying to get a Harley franchise, I think that speaks volumes.
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Ten months! Yikes!!! We gotta find you someone over here to get your parts and ship them to you so you will get them faster because that's so long to wait. If my income wasn't so low at the moment and I lived in a bigger city I would gladly do it for you when you needed something. Sometimes I have a hard time here finding things even though I'm in the U.S. I think it's because of where I live. One day I'm going to either move to a big city where some things are easier or I'm going to say the heck with it and the heck with all this cold weather and go live on a beach in sunny Florida. lol.
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It is just a matter of interest, or a lack of.
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yeah, i think about sid every time i go into a shop around here.. even the sh** shops have the carb insulater for like 3.95...never noticed some things till i signed up here,... and we think we have it bad here with waiting a week. ::) unfortunately the states is heading that direction more everyday. >:( >:( :-\ ... :-X......
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I am actually at this part of my engine build of selecting crankshaft bearings.
Here is some info you may use.
Most bearings in scooters are cheap. NYN is a qaulity Japanese bearing which are used in the top end engines such as Honda, Yamaha, Suzuki.
Cheaper bearings are CJB which may be used by Kymco if there engines are being built in China by 6 yr olds.
When searching for crank bearings the size goes like this. Example
The bearings I will be using are. 58MMX22MMX15MM 58mm = outter diameter, 22MM = inner bore, and 15MM is the width. Take measurements and enter it into google and you will find bearings. The style used on cranks are deep groove.
If you are looking for the BEST type bearings, get Ceramic Hybrid bearings. These are the best you can do for a crank and have many benefits over standards roller bearings. Be ready to dig in your pocket I just got a price of 95.00 a piece for ceramic bearings.
Timken makes great bearing such as SKS. But if your wanting to go with a good qaulity I would select NYN
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Yeah, tried two bearing places, no good. Tried thd local bike shop, screw up their faces at chinese, even though they have a ZX50 in for sale. I have spoken to GC Motorcycles in Adelaide and he thinks the bearings are about $30 each and the seals $15. Crank, about $300. I will go the ebay route.
300.00 for a crank?? LMAO!!! LMAO !! I hope its forged, balanced, and stroked!! A stock crank should sell for 125.00
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One more thing. Most likely you wiped your crank out by the bearing that went bad. Check the crankshft for scoring, heat marks, and put a set of calipers to see how true it is. But I would bet you wiped the crank where the bearing sits.
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300.00 for a crank?? LMAO!!! LMAO !! I hope its forged, balanced, and stroked!! A stock crank should sell for 125.00
Agreed! If you really need a crank, I've got a brand new Italjet crank that I'll let go of for $80. $300? Good grief. Drugs are involved here. It's the only logical (well, somewhat) explanation.
Even many of the racing crankshafts don't cost that much.
~Josh
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One more thing. Most likely you wiped your crank out by the bearing that went bad. Check the crankshft for scoring, heat marks, and put a set of calipers to see how true it is. But I would bet you wiped the crank where the bearing sits.
lankeeyankee, had you bothered to read the post you would see that my bearings and crank were not damaged, I was looking at replacing the bearings simply because I had the engine apart, the bearings are proving to be dificult to get a hold of and on ebay i can buy a crank with bearings for about $70, or $110 for a stroker crank, with bearings.
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Areomyst, thanks for the offer, but if I go for a new crank I will probably go with one from ebay, they are a good price and have the bearings and seals with them. Trying to buy anything for these scoots in australia is not easy. This is why I got the cylinder kit from ebay, if i remember at the time a 70cc kit locally was $339, the one I got was $135.
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lankeeyankee, had you bothered to read the post you would see that my bearings and crank were not damaged, I was looking at replacing the bearings simply because I had the engine apart, the bearings are proving to be dificult to get a hold of and on ebay i can buy a crank with bearings for about $70, or $110 for a stroker crank, with bearings.
Chiming in again........
The first post to this topic was by jarek
"Any idea where i can purchase new crankshaft bearings?"
Where do you come in trying to correct me?
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Chiming in again........
The first post to this topic was by jarek
"Any idea where i can purchase new crankshaft bearings?"
Where do you come in trying to correct me?
...omg...here we go again....
:-\
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Chiming in again........
The first post to this topic was by jarek
"Any idea where i can purchase new crankshaft bearings?"
Where do you come in trying to correct me?
...omg...here we go again....
:-\
Am I correct or not? Jarek started the post wanting information on crank bearings.