Thank you Belter. Is a serviceable bearing (6204 RS - open on one side) vs. completely sealed on both side (6204 2RS) just a matter of personal preference, or is it smarter to get a bearing that you can re-lubricate? Not sure that I should trust that the bearing was lubed properly. If I am going to lube it, any recommendation on a specific grease?6204? 20x47x14.
Thank youthey need to be sealed. i use nsk ddu bearings, which is a better seal. double contact seal maybe?
Thanks Belter. As I overthink it all, I seem to have opened Pandora’s Box.. there are different iterations of these bearings- the "RS" has a rubber seal on one side for servicing of the bearing, "2RS" is completely sealed and pre-lubricated. And the DDU-RSK that I found is also a “C3” is for high speed, but it has an increased internal clearance, which I would think is a bad idea for a motorcycle wheel. While I might ride the motorcycle at "high Speeds", the wheel bearing is actually turning at quite a "low speed".... so I ordered the standard 6204-RS and will pop one side off when I get them to see if they are lubricated or not and lube it myself when they get here.they need to be sealed. i use nsk ddu bearings, which is a better seal. double contact seal maybe?
Thanks for this info- bearings are on the way and forks are apart.The seals easily pop off if you buy sealed both sides , then want to lube them at a later date.
Thanks for taking the time to post that- I’ve still got to do the rear wheel, so more bearings to order.i always use c3 bearings for wheel bearings, and i never remove seals and grease. it's not designed as a removeable seal. that's why it's called a sealed bearing.