I see a wide range of prices (15-120 usd) for the drive side main crank bearing. I obviously dont want to skimp out on a cheap bearing, but I know you can buy bearings from non cycle suppliers pretty cheap if you know the dimensions, so who's to say that some of the expensive ones aren't just cheap ones marked way up? What should I look for and what's a good bearing? Is it worth upgrading to roller bearings, and if so anyone have any suggestions on a good, reliable source?
meandthismotorcycle.blogspot.com smokeandthrottle.blogspot.com Triumphs and BSA's, a few... I'm a hoarder.
“I don’t mind the Ten Commandments, I believe in the Ten Commandments. The first one, ‘I am the Lord thy God,’ is a great commandment—if it’s not said by the wrong people.”
—Bob Dylan, introducing the song “Masters of War” at New York City Town Hall, 12 April 1963.
Bearings are a bit of a complicated subject here in the USA. RHP (and now NSK) and FAG BALL bearings are subject to very high anti-dumping tariffs. These anti-dumping tariffs can be more than 50% of the cost of the bearing. When we buy these ball (not roller) bearings we pay an estimated anti-dumping charge and it opens a case. I have unresolved anti-dumping cases on these bearings going back 20 years.
The customs is just getting around to assigning the final duty to these open cases, often adding 10 to 50% more than the deposit we made years ago. Often the anti-dumping on the bearing ends up more than we paid for the bearing in the first place.
This is further complicated because a small group control the factory output and the price we pay is not the original price, but based upon a UK distributors mark-up. You don't just go up to RHP and open account and as these are often small run specialty items some one needs to step-up and buy a couple of pallets worth of these bearings to get them made by RHP or FAG. Of course we sold the bearings a long time ago so we cannot just add the extra tariff to the selling price.
The bearing in question, 70-3835, is a 6306 in a C3 condition. There is a very good one available from Nachi made in Japan and is reasonably priced. It should be available for less than $25.00 US. We have sold these for years to people who are looking for an economy bearing. In comparison a RHP (NSK) or FAG could be near twice that price.
I cannot advise you to not find one in Canada or Europe, because even bring one across the border without declaring it subjects you to STUPID fines and duty, plus if you get caught you will have to get a broker to file all the documents which adds hundreds to the cost. People do it, but there is some exposure!! Customs has been real STUPID about this bearing thing!
Overhere (in Europe) these metric C3 SKF or FAG bearings are easy to find. Its just a catalogue item. Last year I bought a new one for approx 30 Euro's at a bearing specialist. SKF has a very good internet site with lots of info. I have also experience with FAG bearings on a Triumph 500. Superb bearings. PS: If you have on one side a plain bearing, than the other side must be a ball bearing and not a roller.
About customs: If I buy from USA I have to pay tax if value exceeds approx 25 Euro's. The tax is approx 20 or 30% from the value of the goods. I dont remember it exactly, but website from customs tells it exactly. Isnt it the other way round the same (approx)?
Jacco....As a matter of interest, I have a 66 T100 SC engine into which a previous owner had installed a roller bearing on the drive side along with the normal timing side plain bearing. The engine looked like it had be used in some kind of competition with later conrods etc. Cheers, Wilf.