Acturlly, you have probably saved yourself lots of grief and money, and gained peace of mind, as something much too cheap to be a genuine Timken will not be, even if apparently correctly marked. My understanding (and in my industry we know a LOT about bogus parts) is that a Timken bearing will always come in a Timken box, at or close to a Timken price. The vast majority of Chinese counterfeits are positively dangerous, and some look very like genuine items. "First Line" are DEFINITELY NOT a recognised supplier of genuine Timken bearings. See here:
http://club.triumph....t/m-1346603935/
I will NEVER buy Minispares bearings, not because I know that they are bad, but they fail miserably to conform to the first principles of running a proper supply chain for safety-critical parts by concealing the source of supply from the customer. With stuff like that it is ESSENTIAL that there is full traceability all the way through the supply chain, and I for one will never risk lives by using "anonymous" parts. Also, I seriously doubt that Minispares have the ability to test bearings from every single batch, and can their supplier be relied on to apply proper QA in the factory? Such questions need to be answered openly and honestly, and thus far they have not been, which is sad, as the Minispares bearings "may" be good, it is just not provable. On the other hand, certain other suppliers are known to be supplying dangerous Chinese junk, some of which don't even fit correctly....