front wheel bearings

hey guys, are all the front wheel bearings the same on the xj's ? i need a new set but i dont want to take mine out till ive found a set to put back in, maybe some one has the sizes so i could ring up my local bearing place ?
cheers brenton

 

Brenton; What bike you got?
I think they are 6302's But you want to get bearings with shields on both sides. I think there B6302Z.

 

lol sorry its a '81 650seca

 

The bearings above should be the ones you want. The prefix or suffix letters signafiy the type of shield,steel, plastic, etc.
The 6302 is what your most interested in. But I would get ones with some sort of shields, By shields I mean a sealed bearing.
I replaced mine recently. I got my bearings at a local bearing distributor.
Part#Fafnir/ 302KDD. There the same bearings,This is what was in mine so I went back with the same thing.

 

I'll just clarify a little since everybody else did such a great job. The 6302Z has a metal seal , 6302S has a plastic one and the 6302 RS has a plastic seal on each side. Neat thing about the RS is that you can remove the seal easily so the bearings will work either way you need it to. I have a set of 6203RS's for my rear wheel where they mount side by side. I will remove the seals on one so I don't have a seal against a seal, (big no no), leave the outside seal on to protect the bearing and all is well.
I don't like the metal seals because when I removed the bearings from my front wheel I found one of the metal seals spun around the axel well. If I have a plastic seal in there I don't have to worry about metal against metal. The axel or wheel will just chew the plastic up and leave no scars.

 

thanks guys

 

just replaced a set of trashed fr wh bngs in friends 81 Seca; went the double sided plastic seal route. Getting them OUT beat me, I simply couldnt get purchase, and a bng puller was too big an investment for a 1 time deal. I bought the wheel to a Yam shop & he had it out in 5 minutes for $15, considering i had spent a rediculous amt of time tryin to get them out it was a bargain. I put the new bngs in the freezer a few hours, & left the wheel in the sun to warm up/expand...greased the recieving well, & tapped it in gently & carefully w/ a socket that matched the outer race. Mind the speedo drive ears......

 

well....its not that i havent drifted out blind bngs before....i ground a couple of drift ends to catch the edge of the inner race....thats what i found so damned annoying...ive DONE this before, and simply, with experience, a grinder, and a couple different profiles, get the #$$%&!! bearing out. couldnt gain purchase, from either end, because of the radiused edge of the race...
The blind bng puller a friend had couldnt get purchace either, & my slap hammer type pilot bearing tool would pop out rather than pull the bng.
Anyone who sees fit to drag the **&^^! thing to a Yam shop will not be viewed as a inept tyro by this here fella.

 

Ah one of those bearings! So sorry. I should have mentioned that sometimes motorcycle mechanics requires dynamite for parts removal!!! No inept tyro-ness implied.